OK, so I've played through the game once already and finished the quest in a less-than-peaceful manner. Even after she died, Super Mutants still respawned (after 73 hours, of course), which was great because they were a very reliable source for some awesome weapons.

So my question is this: if I complete the quest "Crazy, Crazy, Crazy" peacefully, will said super mutants still respawn as they would if I killed Tabitha?

Well, they respawned on my game when I solved it peacefully, so I'd assume yes.

Do they respawn peaceful or hostile? Aside from the random hostile ambushing Nightkin and all Centaurs, the peaceful ending results in the super mutants being peaceful. Although this last time, I got too close to something in Tabitha's room after the was heading down the mountain, and she turned hostile. Got [CAUTION] even though she was outside (actually, ED-E played his battle riff, and then I crouched to see my combat status), and when I went outside she was hostile and I had to kill her. Rhonda didn't react, and there were no live Nightkin nearby to come to her aid so I don't know if they would have turned hostile or not. Rhonda acted like any other friendly Mr. Handy bot when I tried to talk to her, and the mutants on the lower slopes remained friendly aside from those random ambushing Nightkin, and of course any Centaurs.

So, as I understand, they WILL respawn but they'll be neutral???