So, I raised Malice poorly and she ended up "killing" my consorts. Will I be able to get them back in the next act? Or they gone forever?
Probably not, although it is not entirely out of the question. She does have control over time and space. I had Malice return a consort after raising her well, but choosing someone other than her mom. (scene played out exactly the same after release as if there was no Malice) I can see how you raise her affecting the final storyline in act 5. Maybe she can return them, but it's also just as likely they are just gone.