Re: went on a good date then she says "ill keep in touch" WTF!?
Since she said it with a smirk, I'm going to assume it's a tactic for you to chase her (that she's also interested as well).
Try texting her something like: "Hi, miss gymnastics . How are you?"
The miss gymnastics line would be something like callback humor because of her abs and thick legs.
Then after very little small talk (don't carry it out too long, try to text as little as possible), invite her out by saying something like: "Meet me this Saturday at 8:04 at blah blah. I can vouch for the fact that they have the best blah blah blah :P."
Something like that. Try to be creative.
Always be honest with women. That's the true meaning of a PUA.