When I was dating, a personal rule I had for myself was not to date anyone from work. I always kept my personal life and my work life separate from each other. My reasons were because if it doesn't work out, depending on the people involved it could cause a lot of unnecessary drama in the workplace. I wasn't willing to take the chance that someone I dated might cause problems at work if we broke up.

You need to do whatever you're comfortable doing. If you're not comfortable with dating her for whatever reason then maybe you should call it quits before you get deeper involved with her.

when I was young and dumb I had a one night stand with a secretary I knew and worked with sometimes. And trust me, it was very awkward to be around her after the fact, even on the professional level. That broke me from even dating a co-worker.

So if you're not comfortable with the situation then don't do it.

I have to third what the others have said.

Don't date at work.

And there is nothing wrong with not being ready to have kids, or wanting to date someone with children. It is good of you to know that about yourself.

yep. .. fortunately you have JUST started seeing her. and its only been a few times. I doubt if u cut it off that it going to impact her very much at all. I wouldnt tell her it had anything to do with her having a kid though. that would probably cause some ill feelings and tension at work.
stick to your reason being the work issue. an let her know its in the best interest of both of you.
and in the future id suggest you find out If someone has a kid before ur first date. .so u dont waste anyonez time.