hrmm... one suggestion that i will present you with is maybe she knew that she could have sex with you whenever you wanted. ask yourself this, have you been the one to iniciate sex and get things started or was she the person who always would drive the flame...?
sometimes when you can have something all the time, it's not the same. give her some times to relax and calm down with her schooling and family. and when she doesn't expect anything, say after she comes home from work, throw her down on the floor and surprize her. i dunno, pick something that will suit your relationship with her. maybe a romantic dinner after she has had a long day at work and studying. something different and see how things go from there. raverboy
...this is just my perspective on the situation...