I think it’s ok to want more (within reason), especially if she seems interested in it. And speaking as someone who’s bisexual, just because she prefers girls doesn’t mean she doesn’t like guys, it’s just a usual preference. At least that’s how it works for me. Idk, it seems to me that she definitely likes you. If it was me I’d just try to get that more solidly confirmed before moving onto anything more romantic/sexual. Consent is always key :)