Well, I guess I did. It depends on how she understood it. Conversation:

Me: "Hey, about that Bowling on Wednesday. Is 7 good for you?"
Her:"Hey, I will have to let you know as I have so much work to do before Friday when I leave."
Me:"Yeah. Then there's no point of it then. Have fun there."
Her: "We can go some other time, sorry "
Me: "Yeah alright."

I have to admit that at that point I was really pissed off and I might have misjudged the situation. Any ideas on how to make it work?

PS: There is also one other thing. In clubs she was so into me she almost ripped my shirt off me out there, yet when we text, there is almost no sexual tension in the conversation. I've tried jokes with sexual context, simple funny stuff. She always replies "haha" or other annoying conversation filler like this and never really follows the flow. I don't have a clue why she is like this.