If it actually happened, no.
My point was that if they brainwash her to believe Walter sexually abused her before she joined AF.
It all depends on the religious figure involved.Parents don't have the kind of ultimate authority religious figures do. They speak for god on Earth, no one has higher authority in the mind of someone who is deeply religious.
For me, the fifth commandment gives my parents that authority and I'm deeply religious.
But you said adult rather than parent specifically and you're bringing it back to JM who never knew hers, so we'll just leave my opinon and go back to the fictional world.