I wouldn't have a problem with a girl who only wanted intercourse and didn't like BJs.
Demanding certain sex acts isn't very sexy, and probably won't win you any points. Do you watch porn with her that shows girls liking blowjobs? Do you tell her when she does give you head what feels good and only have a positive attitude about it? Have you tried giving her oral in a 69 position, or one that could lead to that position? (you lie down on your back, she sits on your face facing your penis.) Does she worry about you cumming in her mouth?