I've known this girl for a long time, unlike most girls I went out of my way to be complete gentleman in every way. She's the kind of girl guys constantly go crazy over. I took her on more of an adventurous date than I usually try for. I took her to a lake close to town that had frozen over, and waltzed with her over the frozen water. Then I pretended to slip, so we would both fall down close to eachother, and went for a kiss while she was close to me on the ground. Then held her hand and led her back to my truck. Except my truck wouldn't move, as the transmission out of nowhere completely stopped working. We were waiting for my truck to get towed for two hours chatting in the warmth of my truck. I walked her back to her dorm after we made it back, and promised I would make it up to her, and she agreed. Then kissed each other goodnight. I was curious for advice on when I should have texted her after? How long should I have waited? As a disclaimer, I put myself in her phone as prince charming when we first exchanged numbers. So, we occasionally refer to each other as prince charming, or princess kerr respectively.
I texted her the next afternoon:
Me: Did princess kerr end up getting the sniffles
Her: Throat just hurts a lil bit
Me: Too bad, I figured out how I can make it up to you though!
Her: How's that?
Me: Hmmm its a secret... Pick wed, thurs, or next monday!
Her: Hmmm probably Monday, but I'll have to check after I'm back from the gym.
Me: Hah cant believe you actually made it to the gym! for someone who was complaining about studying all night!

(We always argue about the gym, and she spent the date constantly worried about one of her tests coming up)
Her: Can't miss a workout, and dont worry its only a quiz!
Me: Oh so you lied to me all night about your exam! Dont you know where liars go
Her: Nooooo I was worried cause I missed class duhhhhh!
Me: Hah truant too, you're on a roll princess! Why are you skipping classes?
Sometimes she would reply immediately or she would take a while. But, I was the same way texting her.
I sent that last one later one in the night, but havent received a response. What should I do?