Smart bitch, realizing she pissed off MC she made it so it would be harder for him to kill him, I'm guessing she didn't plan for his wife death, maybe her kidnapping and her orders were ignored in the dumbest way, blackmailing MC with his wife would have worked.
I presume she didn't plan his wife murder and it was all the other guy decision, when she learned about it she must have rushed, the question is if she knew the price to pay, because if it was casual it changes things a bit.
MC should have told that woman why he was taking revenge, killing everyone present and then bringing away the leader would only confuse her, and as he was hiding his identity there is no way to connect his wife death unless the bastards left paper evidence.
MC now still have to hide himself, but probably will do so less than before, by appraising the magic on the leader he wil probably discover it can't be reversed and the memories are gone, hiding and living cheaply to protect her life wouldn't make sense unless he superimpose her daughter image.
The organization should have been damaged heavily, could make him harder to track, and will the remaining staff even try find him like they did before? They should think is related to his rampage.