I agree that it's not very polite of them not to even let you know they have chosen anger provider. My advice is to send a quick thank you Email the next day, telling them it was great to meet them etc. then follow up with an email or call, about a week after you meet them, asking if they are interested or of they've chosen another Dayhome. If they say they've chosen another Dayhome, you can politely ask for any constructive criticism they may have, let them know you'd appreciate feedback so you can use it to become a better provider.

The beginning is always the slowest. Once you get a family signed on it should be a little quicker