This is a great story. And I think there's an important distinction to make here.
Let's be clear: her mom was not in a position of stewardship to receive revelation about what her call should or should not be. She would have had no authority to tell the Bishop "God told me I'm not supposed to be in this position, so put me somewhere else."
HOWEVER it would have been completely appropriate to say:
"Bishop, just so you're aware, I've had strange unsettled feelings ever since I was called. Do with that information what you will; I will cheerfully serve wherever you want."
I get the impression that
@MamaTexan's Mom ("Gramma Texan?" đ) went with that latter, humbler approach. Good on her!