I would stay with the first as well... just as a moral thing. If I committed to her then I stay with her. She may decide she wants to leave her child with you Part Time during her mat leave... I had a client sign on knowing she was pregnant in September and with full intent to remove him from care for her mat leave. But, she now loves me so much and he's so comfortable she's not only leaving him with me, she's also paying a holding fee and leaving a deposit for baby number 2!