I agree with Kinorc. Seems like she was looking to hookup but you didn't pull the trigger. Twice... Was there any escalation at all? No makeout? No boobie grab? No sexual talk in any way? Or did she walk into your home, head straight to your bedroom and immediately fall asleep? Stop being the nice guy. I'm not saying rape the girl, but be a little aggressive. Show her you're a man. Take control.
As for what to do with this one, FREEZE her out. If she texts you, keep your responses short. Sometimes don't respond back until the next morning. Your response should hint to the fact that you had something better to do than text her. "Just got back from the the hot tub with some friends. Wussup?" If she responds back, keep your reply short.
Her: Nothing, just wanted to say hello
You: OK
DO NOT INVITE HER OUT AGAIN!!! DO NOT TEXT HER FIRST!!!
Freezing a girl out definitely works. Here is a transcript from a girl I've been talking to. Our history is, I've made out with her friend (3-way kiss), we've hung out a few times, but have only actually slept together once. Believe me, there were plenty of opportunities.. Anyway, I guess she got tired of my games and flaked on me last Friday.. I took it as a sign of disrespect and started freezing her ass out. Don't tend to a dog bite immediately and the bite will become infected.
Her: Hey... miss u

Me: Prove it
Her: Wow lol
Me: Actions speak louder...
Her: Took me an action to text it
Me: but your action is just words
Next Day
Her: Hey baby
Me: Baby? Who is this?
Her: lol, just wanted to see what smart comment u'd give me
Me: Oh it's *HB*
Her: Ha ha
Next Day
Her: Hey
Me: Hey
Her: What u doing?
Me: Hanging with my daughter
Her: Awww
Next Day
Her: Hey
Me: Hey
Her: What u doing?
Me: Hanging with my daughter
Her: Hows she doing?
Me: Complete sweetheart
Her: Awww... well, i'll let you enjoy her
Me: Ok
Her: Lol... wanna do dinner and movie tomorrow... ur turn to cook lol
Me: Sounds good, but you're cooking since you canceled on me last week.
Her:

Me: Or you can give me a back massage
Her: I'll cook lol
Me: Done deal
Her: Salad it is
Me: Sounds like a great appetizer. What else is on the menu
Her: What do you feel like having
Me: Meatloaf, mashed potatoes, peas, dinner rolls
Her: Mmmm sounds yummy
Me: You're cooking so it better be
Her: LOL
So.. Freeze her ass out..