Minerva considers giving Isabella warnings about ridiculously unlikely supervillain attacks and then decides it would take too long for the amount of ridiculously unlikely it is.

"In the event that reporters call you up and ask to interview you, I'd appreciate it if you'd keep details of this conversation confidential. Also, you may be asked for autographs."

"Should I refuse to give autographs?"

"Completely up to you. It's just that if you go down the street with wings and a costume, people will tend to assume you're a superhero and superheroes do get asked for autographs. And interviews. And to get cats out of trees; I've never learned why so many cats get into trees, but it does seem to happen."

"I could get a cat out of a tree."

"I do not doubt that you could."

"But I usually fly to get places so I'm fairly hard to stop for an autograph." Shrug. "Anything else?"

"Not unless you want an elaborate description of various supervillains and/or similar threats alien to your world who are highly unlikely to appear in Chicago, but might. Which I doubt you do, given that they have Wikipedia pages."

"I'm glad to find Wikipedia is something we have in common."

"It is thus far the most improbable coincidence that the mutually-real-alternate-timelines hypothesis has to account for," she says, "but Wikipedia is exceptionally useful."

"I don't know if it's the most improbable. We have a lot of matching presidents too, why not a matching Jimmy Wales."

"Because of the odds that he would pick Wikipedia as the thing to call it in both worlds. No presidents born after 1924 were the same - which is not surprising, as that was the decade in which superpowers first entered American life. The number of basic internet services that are the same is staggeringly unlikely, to say nothing of the smaller implausibility that internet translates."

"You didn't have superpowers around until 1924? What happened?"

"Our world cured a rare genetic childhood disease. Then people who'd survived the disease started to be in high-stress situations. A tiny number of children had survived it before, there are tinker-made-artifacts and a tiny number of immortals, but very few of them - we have some suspicions about Jesus and Joan of Arc - had significant impacts on history."

"...we had Jesus and Joan of Arc. Joan of Arc wasn't even a magical girl."

"... I see. Thank you."

(Minerva is downgrading the odds of 'Bella's world is alternate history' and upgrading 'Bella's world is a construct' in which case funding her is worth less. Really, she'll see what the economists have to say, most of the bulk of the evidence will be in whether the price structure hangs together insofar as it is different from her home timeline's...)

"You're welcome. Should I go talk to Xander now?"

She nods. "Yes. And thank you for what you've already said; even if you decide not to help, what you've already given me will be very useful."

"I'm all for saving the world."

"And I'm very pleased to hear it."

Isabella flies home and talks to Xander and then they look up Minerva on their INTERNET CAPABLE DEVICES.

Yeah, she has a Wikipedia page, too. Longer than that of the average President. 

"... Minerva (b. unknown, d. 1977) is an American superhero[1] and futurist[2] who serves as a founding member of the Atlantic Six[3], a philanthropist[4], and an independent hero[5]. A construct and former tinker[6], she is most famous for her Atlantic Six service, her leadership of the Twentieth Century Foundation[7], and her role in the synthetic rights movement[8], as well as her leadership of the Qattara Depression Project[9]..."

"... Minerva's early life is unknown, as she has refused to disclose her secret identity[13], the only member of the Atlantic Six to consistently oppose doing so..."

"... Her early claims to be a traveler from a utopian future were not borne out[18], and she has since admitted them to have been fictions created to protect her secret identity[19]..."

“... As a founding member of the Atlantic Six, Minerva played a major role in the Atlantis crisis[26], Voidwrath’s first, second, fifth and sixth invasions[27], the Necromancer’s reigns of terror[29], and the Legacy Forge crisis[20], among others…”

"... Her death in 1977[30] triggered a Supreme Court case over continuity rights[31] which was decided six to three in favor of the plaintiff..."

Minerva’s nemeses:

Its own page, and a long one.

Minerva’s engineering projects:

And you thought the page of her enemies was long. Includes a, quote, ‘orbital geoengineering laser’ and a satellite system to aim it, as well as power plants, robot factories, and an advanced AI (later stolen).

Political views:

"Prior to the 1968 amendments[43] to the Atlantic Six charter, Minerva regularly made political statements on a variety of topics consistent with a social democratic[44] or democratic socialist[45] position, regularly condemning American foreign[46], civil[47], and industrial[48] policy as inhumane. Since the charter’s amendment she has refrained from making any public political statements[49], though she has said that she does not agree with all of her former beliefs[50]. She has signed joint public statements by the Atlantic Six condemning the Ethiopian genocide[51], the Chinese government’s policy in Tibet [52], and the neo-Sovietist movement[53], among others… Her party affiliation is presently registered as Independent[54]...”

Controversy:

“... Although Minerva regularly comes first[74] or second[75] in polls as both the 'most famous'[76] or ‘greatest’[77] superhero in the world, she is not without her critics, primarily on behalf of her political statements[78][79][80], and her history of foreign interventions[81][82][83], some of which she later admitted were ill-conceived[84]...”

Who else is a contender for most famous or greatest? Who are the Atlantic Six? What has become of the stolen AI? What's the page on the Twentieth Century Foundation have to say?

The two questions correlate a lot! The Survivor of the Thirteenth is the other hero who usually ends up first or second on those lists, as well as someone French called Superieur and another American called the Smith. The Survivor is an immortal veteran of the Second World War whose strength and toughness increase permanently whenever someone dies near him; he has a fancy suit built for him by Minerva so he can pick things up without breaking them and is the world's strongest man. Superieur is a power-mimic who's generally accepted as the strongest member of a major European superhero team whose name changes every several years; it's currently the All-European Crisis Team, who is apparently actually very quiet and friendly when off-duty and on-duty usually has thirty or forty powers active at a time. The Smith was another American tinker, an engineer and family man who could make any mechanical device he'd ever seen function, letting him copy and improve on other tinkers' work, but he died of a heart attack about twenty years ago and he's been dropping on the lists since.

The Atlantic Six is a superhero team; it originally referred to the only six American superheroes to survive WW2, but that team was disbanded after half of it died in 1953 and a new team was formed in 1963 consisting of the Survivor, the Smith, Minerva, Veritas, Professor Porphyry and Meteor to fight Legate Livia. Its membership has changed over time, with Minerva and the Survivor being the only permanent members; the current leadup also features the second Smith (the first's son, also a tinker), Paladin (maintains a super-strong and indestructible shell around herself, formerly the supervillain Vendetta), Tidebringer (controls all water in about a mile's radius, including blood, which he uses to incapacitate people safely, also has a tinker-made gauntlet that can create magic water), and Evenhand (former Marine and power-nullifier).

The stolen AI was stolen by Mechanos, one of Minerva's rogues, a Singaporean-born archvillain also known as "The Scavenger Tinker" and "The Self-Made Man," who used elements of it to run his evil robots. It is currently working with him as his assistant/master-computer, under the name H3R4.

The page on the Twentieth Century Foundation says that it is a centrist philanthropist organization devoted to helping with the peaceful and sustainable development of human flourishing. They fund research into preventing disease in the third-world and understanding why wars happen so they can make them not do so and doing research on what makes people be supervillains and how to stop global warming, and generally give money to good causes in the broad spheres of 'third-world poverty', 'existential risk' and 'democracy good'.

Isabella and Xander will email Minerva accepting her job offer and start looking for convenient real estate.

Minerva is happy to have them.

Convenient real estate is surprisingly expensive, but there are potential options within their price range. Do they want to rent or buy?