I'm trying to get to know this girl that I met last month. When we are in person we have an amazing time. I just got her # couple of weeks ago and we texted here and there, but she takes hours to respond and sometimes she just doesn't respond. I know I can call her, however I usually try to get the girl a little comfy through texting and then call her.

Yesterday I texted her and we chatted and I told her for us to go grab ice cream. She responded about 2hrs later saying, "we could go tomorow. My sister forced me to get ice cream with her right now."

We kept texting for a bit more and then she never replied. Later on that night I posted something on my FB and she commented on it. We exchanged a few comments and then I stopped responding. I went to sleep lol.

So my question here is even though she said, "We could hangout tomorrow" meaning today and she stopped texting me back yesterday should I still hit her up for us to hangout or should I just let it go and hit her up a week from today or something?

Any comments and/or advice I appreciate it

All of this electronic communication is killing your game in my opinion. Real seduction happens in person. I would shift your emphasis - stop overthinking facebook and your mobile and just use them to get her to see you in person. Go and get ice cream with her tomorrow, that sounds like a good idea. Maybe try giving her a ring and telling her where to meet you and when. If this is going to go anywhere, the serious footwork is going to take place from real, face-to-face interaction.