I don't think bringing up your late fees was appropriate. This person was upfront in saying they are specifically looking for a daycare that is open until 7pm. If you close at 6, it would have been more appropriate to say, "Unfortunately I close at 6pm so I am unable to provide care until 7pm. Good luck." Of course you should be honest about your policies. However, this person wasn't inquiring about your late fees. They simply wanted to know your hours. Would you have let them come to your home anyway, knowing they aren't a good fit for you?