Iomedae.
Okay, technically there's a two out of three chance it's Iomedae, conditional on this not being a Chelish trap or one of Razmir's Visions trying to mess with the new girl. The list of female entities who think there should be no Evil gods, can sponsor an eighth-circle-plus caster, and can engage in diplomatic negotiations on a national basis consists of Felandriel Morgethai, Iomedae, and Queen Galfrey of Mendev, who is basically a local proxy of Iomedae. And he's using god-pronouns, which she almost missed.
He absolutely needs to know if Iomedae wants an alliance with Him. And she should absolutely tell Him as soon as she gets out of this, even if it isn't that. So whatever happens, that's on the list.
Move to the actually ground-level problem. On the one hand, Razmir absolutely wants to be a godlier god than He is now, it's one of His top priorities, He is pretty open about how increasing the spread of His faith empowers him.
But on the other hand, "I think your replacement claim is less plausible than the original? His priests can stabilize Cure Light Wounds, then cast Cure Light Wounds, to cure people. Which I've seen, under Detect Magic albeit not Arcane Sight. Saying that He has solved the famously unsolvable problem of arcane healing, which Aroden of Azlant did not solve, seems less likely, to me, than that He is some kind of god or godlike entity. Right now the state-of-the-art is Infernal and Celestial healing which are recent inventions and some kind of cobbled-together Conjuration in which you try to Conjure the fast-healing properties of devil or angel blood into someone" (she has no idea why it isn't Transmutation) "and He can just give His clerics Cure Light Wounds spells."
She pauses. "... I'm sorry, I recognize that diplomatically speaking you can't admit His divinity, and He would absolutely like to stop His current feud with the other gods and is in fact extremely enthusiastic about plans to reduce material scarcity on Golarion and it's completely plausible that he would like to displace Asmodeus and become king of Lawful Evil, I obviously haven't checked with him about this specific issue and can't speak for Him here," just, this wizard is wrong.