Yup, I would just give them a written letter informing them that you have decided to fill your remaining spaces as per the government standard and go from there. If they say something about it (not liking it or that they said no) I would then hand them a termination letter stating that you no longer can meet the child's needs. I would also tell them that you asking them about it was strictly courtesy and it is your business and businesses change for the owners best interest.