*Sigh*... such is the challenge with taking in those one year old (first) children. Almost without fail, you are told about a new pregnancy within a year or so. LoL
Ultimately, you need to do what you have to do for your business. Just a reminder. They will be thinking about their family (as they should be) so you should take care of yours. Don`t save spaces without any payment just on faith that they will be back. Work out some kind of arrangement that ensures you won`t be totally screwed if they do the math and change their mind.