As far as Sephiroth is concerned, she's already solved the problem of being dead, so it seems inconsequential. The real problem is leaving, and being in control of what that entails.

But, he shrugs. "I don't know. At least that was straightforward." When someone tries to kill you, you get to try to kill them right back, and then you have a dead body. There's a comfortable simplicity in that.

Actually interacting with people is... complicated.