When playing through Ascension in the past, I've had the deaths of the Five give Mel Feedback - she takes 100 damage and lies down for a while. I've never really cared about this because it was quite possible (and in fact best) to give her something to play with and ignore her until everything else was dead.
However, now that I am all alone, every round is important - she either casts Breach on me, summons a hoard of Fallen Solars or engages in some other highly unpleasant activity and Feedback is nice to have. But it doesn't always happen - sometimes, I kill one of them and she doesn't recieve it. This is usually in a Time Stop, but sometimes in normal play as well (and sometimes it works during a Time Stop). I am using all kinds of methods to kill them - from spells, to pure force to shapechange Mind Flayer (which only works on two creatures, but still). My questions are these:
1) Is she always supposed to get Feedback (I'm playing on Insane)?
2) If so, then will her not getting it mean that I will be unable to kill her in the end (I know she has to know that all of them are dead)?