Been talking to a girl on and off for a couple weeks. Met at a party and made out, texting game is alright. HB8. Anyway, we made plans for coffee today, last night. One thing about this game is I don't know if I should contact her because we never stated a time. I don't want to text her being like "oh what time do you want to go?" and be all beta, but thing is she is pretty busy and giving her a time seems likely to fail since she only has small windows of opportunity to do social things (she works a lot, homeworks a lot). Just from typing I can tell I sound very beta, so how can I gain control, get her more attracted and more willing to drop some of her plans to spend time with me? Any advice would be useful; let me know if you want more info.

edit: Would the situation be different if I wanted an emotional connection? I play guitar and have many songs I could play for her; how could I use that effectively?

edit2: she flaked.