Getting out of a date that I don't want to go on?

So I am going on a date on Saturday and I really dont want to go on a date with this person… I said yes because I found out she was crushing on me and I didn’t want to be that guy. But heres the facts…

Problem 1: I work with her, and thats not going to fly for me. There is a lot of stuff that could go wrong if it doesn’t work out. Plus I am a creature of solitude I couldn’t stand seeing someone all day at work and then going home to them also.

Problem 2: She has a kid. I do not want kids… mine or anyone else’s.

Problem 3: I am not attracted to her at all… which takes me back to the reason why I said yes because I have been rejected before because there was “no spark” and I didn’t want to do that to someone else… but now that I find myself in these shoes,.. I don’t know what to do

End of line.. I need help.