Over the next few years, she sees Bàrbara and Ilda off to join adventuring parties.  She even think's they'll probably return if they don't die.

Schools sponsored by the archhealer start up, so Thea's plans to start a school are wasted... but many parents want some extra tutoring for their children, or at least to show their religious devotion to an acceptable God, so Thea puts some of her sisters on that and they bring in some extra money on the side.  Perhaps as her sisters grow up they might expand their services.

Estella moves out, taking some position offered to both teach and research magic, but to Thea's mild surprise, they actually keep in contact.

She finally starts channeling positive 3 years after the convention.

After talking carefully with a priestess of Erastil, she decides to resume taking in orphans, just a few every year or two, but enough to keep the Abbey's (new) traditions alive and to give a few children a better life.

Ilda's returns to visit a few years later having made a circuit across Cheliax and even outside it at a few points.  Ilda is much stronger, she's able to do several different tricks with her breathing like a proper monk.  She's probably stronger than Thea at this point.  Bàrbara died over a year ago in typical adventurer fashion, fighting a monster that her party had misjudged just a bit.  She's glad for Ilda and more upset by Bàrbara's death than she expected.  Seeing Ilda's strength reminds her of her own ambitions.

The Abbey is operating smoothly, so, after ensuring that contingency arrangements are in place she starts taking small adventuring jobs around and nearby Westcrown.  Nothing too risky or too far, all the jobs the sorts of things a mere first circle cleric could handle in a day or two, and Thea has her monk abilities on top of that.

Despite her caution, she reaches second circle in under a year.  It means more money for the Abbey and it means Thea has a vastly improved set of tools.

The rest of the Abbey is doing well.  Dia has left for a (seemingly?) ordinary job as a bureaucrat and functionary.  Lilly has been selected as a Paladin by Gruhastha, she plans on joining an Iomedaen order.  Estella informs Thea on her frequent visits that she made some breakthrough, not a proper necromantic healing spell, but an innate supernatural ability for performing minor healing with arcane magic (which is still pretty promising as a development), and she takes on one of Thea's younger sisters as a direct apprentice.  And a few of the older sisters join Thea on her little adventuring jobs.

Irori choses someone under Thea's tutelage!  Not one of her sisters, a merchant's daughter that attends some of the meditation lessons Thea teaches.  Thea is considering asking her to be her successor, but she leaves to travel the Inner Sea within a week of being selected.  It reminds Thea of her own bigger ambitions.  She'll wait for an appropriate successor first before leaving the Abbey.

She's stagnated at second circle.  She wants third circle, but she doesn't want to start taking bigger jobs until she sure of the Abbey's future.  Finally, another few years later (just over a decade after the end of the convention), Irori picks a cleric that will make a suitable successor.  She was a school teacher that had been spending more and more time at the abbey, taking lessons in meditation and martial arts and taking some work teaching students herself in the evenings to make some extra money.  Thea feels the teacher out for more responsibilities to the Abbey, offering her full time employment at the Abbey (with clear indications she intends to eventually pass leadership to her) and the teacher accepts.

Meanwhile, Thea starts planning to leave, this time in earnest.  She had the beginnings of a plan some years ago which she expands on now: she'll visit the sites of various minor deities and saints and revered figures to try to figure out which of them have actually made demigodhood and look for hints at how they did so.  If she makes third circle and has enough money to spend, she can even make minor inquiries of the outer planes.

Finally, a full twelve years after the convention, her successor is ready and her plans are just about finished.  She takes one last minor jobs in Westcrown, just for a bit more money to spare.  A merchant that needs some muscle while visiting with some Kobold traders.  She upsells the merchant on hiring two of her sisters as well.  It should be an easy job, the Kobolds don't actually make trouble that often and they should be more than prepared for a fighting retreat to escape them.  But they aren't ready for Drow.  Thea deflects the first arrow empty handed, twist to dodge a second arrow, but a third arrow catches her in her throat and before she can channel energy she's dead to a lucky fourth arrow right in her eye.

She hadn't actually purchased resurrection insurance yet.  It's quite an expense, and she thought the minor jobs she was taking were manageable enough and to the extent they weren't it was extra pressure to grow stronger faster.

Axis is disorienting, but the Irori's realm seems like it will be everything she hoped for.  She looks up news of the two sisters that were with her, it seems one is now in Heaven, no news of the other from any plane that communicates with Axis... so she's probably alive.  And if she's alive she would have kept the merchant alive as well... it looks like that merchant got his money's worth hiring all of them.

The Serene Circle has thoroughly documented the many options for augmentation and self-perfection available across Axis, so Thea gets to work on the rest of her existence for eternity.