This is a little late and last minute, but Max is wriggling herself in there as a strictly back-up capacity, because she doesn't have a death wish. She can either bail the not dead sacrifices out around the battle, or bail a character out of fighting Isis when they're ... looking like they're losing. She blurs, which involves moving faster than the human eye can see, so she'd be mostly doing the pushing people out of the way thing, and doing a little catch me if you can with the goddess. It's annoying, and Isis will probably get frustrated enough that Max will probably wind up a little worse for the wear, but she can take it.

(Arden, let me know if this isn't okay, or if you'd rather her stick to the sacrifices, or ... what have you. =D Man, I was only supposed to have SAM involved in this.)