Meeting with Morai, visiting the world between worlds, and being saved by a Jedi still mourning his master all sound like reasons for somebody to start reflecting on their Jedi upbringing, right?
Since Ahsoka had been pulled out of her own timeline, she returned to Malachor after being saved, promising Ezra that she’d find him when she could return.
This involved a reunion with Morai from The Clone Wars.
Especially if that somebody was quite possibly going to hang out alone in a Sith temple away from all her friends for a couple of years with nothing to do but reflect?