So I wasn't at all paying attention to optimal completion of companion quests for the best endings. I'm now at the end of Jaefar's quest, and I apparently did something wrong at some point, as I don't see an option for getting her to turn on her god (and unless I'm mistaken, I think what I did wrong happened several chapters back, so it's not really something I can correct). I can do all the prompts attempting to argue with her, but I'm still left with just the choices of either killing her or allowing her to kill her daughter (either by staying undead, or by assuming her body).
Which is the best outcome to do? I honestly rarely use Jaefar, so I don't care that much about her. I'm also lawful good, which seems to align with just killing her, although that choice strikes me as kind of dickish. So I guess I'd rather let her live, but I'm more worried about other companions that I actually like getting pissed at me and leaving. If I tell Jaefer, "I don't give a fuck, do what you want," several companions still blame me when she kills her daughter, but I don't know if they will be angry enough to leave, or if it's just flavor text.
Is there an optimal choice to make in this situation that keeps Jaefer and all the other companions? For the record, I'm 100% done with Tristian's quest and, as far as I know, I have the optimal ending with him, if that matters.