Got a female bartender's number, what next?

Last night I went drinking with friends. We sat at the bar and ordered shots and drinks all night and we got the two bartenders, both female both cute, to drink and take shots with us. I made a decision that I was going to hit on the brunette one. We talked quite a bit and I goofed and joked with her. At one point when she walked by me she rubbed her hand on my arm. At the end of the night I went up to her told her how much fun I had and then told her she should come out with us sometime. I then asked for her number, and she gave it to me. She then told me to follow her around the bar while she cleaned up.

I already tipped her before this entire number stuff so I know it wasn't to get a tip.

What should I think, this girl is 5 years older than me, has a kid.
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Update, texted her tonight to see what she was doing tonight, she told me that she has her kid tonight. I texted her back maybe next time then. She said thanks for the invite.
Got a female bartender's number, what next?
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