Interesting. Well, that seems to have permanently worked - she ran through the bard talk / redemption thing just fine, got her paladin class back, etc.
Now I'm just curious what could have been the issue.
Just spitballing here, but now that I think about it, when I've done the Bhodi event in the past, I sooort of remember that the Romanced Character has a short dialogue when you confront Bhodi in her lair? I don't recall getting anything like that with Isra. However I happened to level to 18 staking the last vampire upstairs, so I rested and kinda went nuts with time stop / improved alacrity for the bhodi fight itself and nuked a lot of stuff, including Isra, right away. Maybe she had a dialogue that she was supposed to say there and her not saying it borked things?