Ummm well Of course you should ask... Don't you love her? Isn't that why you are concerned about this and posting this on here. Well I guess she has some kind of mood swing I think... Maybe... Or she could be shy... But as you guys get to know each other more then your gap with her will be less and you'll both be comfortable with eachother. Remember relationships requires lots of work but it would be worth it... If you really care for it that is. Well I hope it goes well and don't give up!