You're giving her emotional support without her having to give into you sexually. Basically what I'm saying is that you are so far into the friedzone you're drowning in your own friendliness.

I normally advise against this, but this case calls for no-contact and pulling out of the situation. Stop texting/calling/initiating her first. When she does contact you, be aloof, short, and to the point. Do this until she starts questioning your conduct.

At that point you can start to engage again, but you have to frame your relationship completely differently than it was before. Tell her you're "Interested in her sexually and not interested in being 'just friends.'" If she pulls away at that point, let her go, I'd bet she'll come back. If she doesn't pull away, then you game her hard.