She may just be a little more reserved than you are about physical stuff or talking about it. I am that way and my bf isn't. Makes me blush sometimes when he talks about stuff.
About the canceling of the date, not a huge deal. At least she respected you enough to call and not text or email.
I'd maybe shoot her a text tomorrow wishing her a happy half way to the weekend or something. Ask her how her week has been. See if she bites and maybe you guys can make plans.
So, so you think you can tell Heaven from Hell,
blue skies from pain.
Can you tell a green field from a cold steel rail?
A smile from a veil?
Do you think you can tell?
And did they get you to trade your heroes for ghosts?
Hot ashes for trees?
Hot air for a cool breeze?
Cold comfort for change?
And did you exchange a walk on part in the war for a lead role in a cage?