It's a bit of both — she needs something to anchor to, unless you manage to find a way to permanently death-power her without funnelling magic her way. I'm not sure you can, at this point. Among her choices are, so far, two people who've used her, and the third option is a newb who doesn't know how to — so it's a bit like a dog who could take food and linger around anyone, but decides, yeah, this guy who doesn't kick me will do.