First and the easiest wisest answer... move on.
Second answer... game/fvck other chicks, while still trying to get at this one, when your together.
(That way your patient, detached, and cool bout it all)
Third... here's what your looking for:
Get it on, to a point where you have before. Where your hot, she's hot... its hot. Then right before you think she would back off, you back off. After a kiss or something. Then just lean back, eyes wide at the ceiling. She'll naturally ask you... "whats wrong?" This is where the pychological gold comes in. You tell her...
"I don't know... my hearts into you, we have a great thing when we're together, its fun, sexy, etc... and I feel like you have all the reasons in the world to trust me, cause my heart is real. But the fact that you don't trust me sexually, and refuse what your feeling... I don't know. Its unfortunately beyond my will, just sort of turned me off. I want to share my sexual feelings, my heart, my pleasure w. you...but the fact that you can't accept it, is sort of having this bad effect on me. I've been thinking about this ever since last time... and while my heart and feelings are still caring, my body is sort of just losing its attraction for you beyond my control."
Then just get up... and say, "I'm gonna go." And go.
All the while you have to act like this seriously pains you.
You want to give your masculine godly essence to this lucky girl... but her issues have just created such an unfortunate dynamic in you... that its now ruining such a blessing. And it really bums you out.
Now, granted this is pretty gnarly sh!t your gonna drop on her. BUT... isn't that the point! You need to influence her psychology to the point of flipping her script. You need to be the one pulling away now... so that she is the one that wants to physically advance things. Whether they be for reasons of not wanting to lose you emotionally... or whatever. But this is the turn of the tables dynamic you need to setup. The hunter, becomes the hunted
The elements of what I suggested will do that in 2 ways.
-1. That you are honest, and caring, and loving... and this is real (so she can't just dismiss you as a player who just wants to fvck w/o respect for her feelings/issues about sex.)
-2. Your going to be striking the core of her womanhood. The fact that a great guy that truly cares about her, no longer finds her physically attractive. So she might lose him, if things don't change!? Your going to be threatening her entire system of regenerating life. Her ability to physically attract men, that would then fvck her, to create babies.
The emotional "oh fvck!" what am I doing here... will seriously get shaken up on many levels.
The idea is... she'll physically open up, and become more progressive to
A. Regain her sense of "femininity"
B. To not lose the one person that cares about her, brings her pleasure, that has been understanding, respectful, patient, etc.
C. To stay away from the world of potential bad-guys and sexually hurtful situations again.
With all that said... I would truly only drop this play on her, if you do plan on being everything your saying to her. Real, Honest, Caring, etc. To just play a girl like this (sexually closed, fragile), for the fvck... is ruthless and could be exponentially damaging to her future, and how it unfolds. Seriously... if she does open up, and you do sex her up... I would as gratitude in trust, rebuild and heal her from those depths on up. Now I'm not saying... you have to commit yourself to an LTR, or take any BS from her. Just saying, be a man w. integrity... and use your powers as a man to create a stronger/healthier perspective and relationship (w. herself) of her sexuality.
I'm sure you feel me. Cause the fact that you've even been caring/patient/sensitive enough to work w. this girl in an understanding manner... shows some sign of moral fiber.
So.................. think it over. Feel it out. And see if any of the dynamics here could be used in whatever way they could positively be.