You know, given that Rey isn't human I've always wondered what the effects of a vamp drinking her blood would be. While her skeleton is metal and her brain and heart are cybernetic, the rest of her is very organic and contains an immortal cell line that helps preserve her body as well as result in advanced healing.

Otherwise, idk she can set Armand on fire if you'd like, lol. Unless he'd just avoid her entirely since he knows she can do that.