Nothing a good retcon won't fix! Watch her have some strange connection with DOATEC or something.
But honestly though, I feel like they're going to give her an untraditonal fighting style and/or make her a "seductive" joke character due to her apparently pervy personality (this is based off what I heard since I've never played VV either lol).
I can't see her with a serious martial art after the way they advertised her in that teaser. If we actually get something cool, flashy, and hard-hitting I'll be seriously surprised.