Kind of an odd choice to give her an electric guitar motif when she's not just an ancient warrior, but her first film will be set over a decade before the electric guitar was invented. WWI and electric guitars...not a natural fit.
Yeah, very true. For some reason it just really worked for me in the movie though. Could've been a heat of the moment/kick-ass action thing but even listening to it on YT I still like it, anachronistic and all.