Concerning Mitsuki, as Eric recently observed, people die over the course of at least a few seconds, possibly a few minutes. Even with bullets in her head, the question of exactly when she died, and whether she died before or after me (I took quite a pounding myself, within seconds of hers), is impossible to answer directly.
I would focus not on who died first but on whether she came with me. I invited her; that indicates my willingness to take her. I show a 2@2 persuasion, 1@6 charisma, 1@5 animal magnetism, I'll leave it to you to judge which of those scores I would have been using in trying to get her to agree to go with me. If I fail a difficult check against that attribute, the entire question is moot. (On the other hand, I can see under the circumstances giving me a couple intensities on that score, given that she has a gun to her head and I've invited her to escape with me. That, again, is your call.) After that, she gets a difficult will power check, which is a test of whether she asserts her independence and stays behind.
I footnote that both checks are technically optional. That is, if you are certain that Mitsuki would go with me, you have it within your discretion to say that I made my persuasion check and she did not resist with a will power check. I note this particularly because Mitsuki strikes me as extremely impulsive, and you might have drawn the character such that she would automatically take an invitation to an adventure.
I close my eyes and pray a prayer of thanksgiving, knowing that several important pieces of equipment, including the monomolecular blade, the lightning carbine, the steeljack guns and ammo, throwing stars, katana, superhero costume, Haston doubloons, piano, muscle toning suit, bibles, game books, computer, and luggage are all elsewhere, in buildings which will put them on higher ground and possibly out of this. Then I reach out with my feelings, first to see if I sense Mitsuki (having had Fluffy with me for an extended time, I know the feeling of another verser as distinct from that of equipment), then to see whether I can get directional vectors to my equipment.
I open my eyes to examine my present situation. The destruction of the robot is distressing, but my guitar was probably in the club with me (I would have taken it with me to sing my song to get past security), and I was holding my steel kau sin ke when I was killed, so I want to check these. The guitar particularly interests me, first because it was not that close to me when I was hit, and second because it was coated with the super-protective polymer in Northgate, which might have provided protection to it that the robot did not have.
--M. J. Young