C.W.
I take the unexpected approach and tell them I do have a daughter that is 19 and in college so having to take time off for family would not be a problem of mine. I'm 46 but am told I look atleast ten years younger, prime little kid time! I don't want them to think about it because they will! In my industry it takes usually 6 -12 interviews, group meetings and presentations to receive an offer.
You have been working the entire time, I wouldn't worry about it. Potential employers can't ask about children but I always like to clear up any potential worries. If you have wonderful, reliable daycare and a husband that will help out then I think that is a selling point when you get much closer to an offer.