I agree with others. I would send them a quick email letting them know you are finishing up interviwing and if they want the spot they need to let you know by xx date. I actually did this a few months ago, mom never got back to me by the required date and I gave the space to someone else. Then the mom called me a week later asking for the spot and couldnt believe I had given it away! you snooze, you lose. hopefully she learned for the next daycare.