You could certainly keep her on, but as the other ladies said, I would go for a holding fee and monthly fees. I did it in good faith for a good client and the kids were placed in larger daycare 6 wks before full time care was to begin....cost to my family - $15,000. NEVER AGAIN! Asking you to hold till September is pretty tough too....that's a long, long time. Maybe hit her again with the idea around May or June?