Honestly? If I had only had my child in care some where a month and suddenly they told me they would be away for a month I probably wouldn't be impressed either having to scramble to find care for kids in yet another place they will have to adjust to when they've just went thought it with you. Not to offend, but just being honest. But, nothing you can do, your family has to come first. If you lose this client over this, then not meant to be.