Why don't you try this, what's the worst that could happen?
If you pat her on the a$$ and she gives you a dirty look, pat her on the a$$ harder. Say, "mmmm, I love the way you look dirty at me" and then continue whatever you are doing. Do the same for any physical touch she "doesn't like" (mix up what you say though, repetition is a killer, right ladies). All the while you are doing this be thinking "I know you want me, I want you, I will have you!" Those thoughts will give off a serious confidence vibe which will attract the fool out of her (at least it should anyway).
And if all this doesn't work, it's not like you have lost any ground is it? If you are having problems getting into a confident mood, think of her rejections as a test. She is trying to see if you REALLY want her by pushing you away, are you "alpha male" enough to take what you want.
Of course, temperance does come into play. If this really isn't a test, you'll know fairly quickly and can back off.
Chromo-cuda
"Recollect me darlin, raise me to your lips, two undernourished egos, four rotating hips"