Long time lurker here, want to think you guys and gals here for helping me improve my dating life immensely since I started implementing what I learned.

A friend and I went to a bar and ended up striking a conversation up with 2 women our own age. They were playing a game of pool and we asked if they'd like us to partner with them. I played with the girl who caught my attention, we'll call her Sam, and I do fairly bad. I don't play pool often and I kept scratching the ball, but I was staying light hearted and she was teasing and joking with me. Closed the night and both of us got numbers.

Now this is the part I ALWAYS stumble at. I've read threads and tried to implement tips in "my" style but it just never seems to work. I always always always seem to a loose a woman's interest through texting. I have absolutely no idea what to say or do. My friend had a day long texting conversation with his girl the day after we met them. My girl and I only exchanged maybe 4 texts throughout the day. The problem is I don't know where to go from here. I asked her some generic questions, said we both had a lot of fun and looked forward to seeing her at some bars we both frequented. Her friend and herself both posted on my facebook saying they had fun and she teased me a bit too. When it comes to texting though I sent her 2 invites, one to a coffee shop at 4 pm, she had to work, no biggy. The next day I said "you should come out with me to local bar/restaurant tomorrow night. She replies with she'll be busy most of this week. specifying until Friday.

I'm at a loss of how to respond, if she's still interested or not. She teased me on facebook and jokes with me up until yesterday, the same day she sent that text. Should I try and make more plans for next week? Any helps appreciated! And sorry for the wall of text.

TL;DR: Got a girls number, saying she wanted to hang out again, she's been lackluster in texting back and am unsure how to proceed/make plans.