Txh for the reply! Make sense now! Ok, I'll undo it, since she's a gorgeous one, and that'd be a lot to replay indeed.Been a bit since my last playthrough, but... IIrc, 'boosting her faith' essentially removes her from the game.
Meaning, you'll miss some pretty nice scenes with her down the line.
That ghost is an 'afterthought' option to undo that choice so you don't miss out on 'fun' with her at the temple
'Cause, otherwise, it's an awful lot of game to re-play to undo that choice![]()