do you know her well? if not i would keep it casual and get to know her a bit while the kids had their "play dates" then when you have had the chance to know each other a bit more then ask her out cause worst case scenario she may think you were jsut using the kids to get to know her....and you dont want that.
Well I've known her for years, but we've never done much together other than talk during a function and during a convention. I figure getting the kids together is a good excuse to get to know her further. We've had a couple of nice conversations the last couple of months. So I'd like to build upon that.