Sounds like she's being genuinely cautious, if she was playing hard to get she wouldn't sleep with you so quickly.

Take things slow, be patient with her, don't rush. That's my advice for you.

__________________
My Demon revokes any prayer
He's grown contempt for love and hope
He betrays trust, twists truth and fair
Indifference is his way to cope
Engulfing sound of sensations
He quells with voices of despair
And muse of short lived inspirations
Flees at the sight of his cold stare
~Moy Demon - Mihayeel Lermontov~