If you're curious as to what sort of style I am going for specifically, I think [url=https://www.youtube.com/watch?v=LDGSxkxrI0w&feature=youtu.be&t=7m14s]Blackflame Friede[/url] is a good representation of how I would imagine she'd eventually end up fighting. (Dark souls 3 spoilers in link, do not click if you don't want them.)

But eh.

Normally I'd have her go for a vampire or something, but they're not exactly magically inclined from what I read on the wiki. Suppose some sort of demon is possible too or something. I dunno.