Thanks for your reply.

I have since let go of this child and notified the parents when they dropped her off and gave her two weeks notice. I also notified the agency but told them that I had this child confirmed for quite a while (which is kinda the case...long story) so they understood and I am on good terms with the agency but not the parents. I didn't see the mother dropping off her daughter for the last two weeks (she was upset that i had cancelled her care). But she found another daycare home in my area through the agency.
I really didn't want to end her care on bad terms but my family comes first and we have benefited from the extra income that this switch has created and I have been able to afford to buy more things for the kids.