I probably would offer to keep the baby for the next month at no cost - let's face it even if she isn't coming back you probably won't fill the space this month anyways. Then that will give them time to figure out what they are going to do. First for them will be finding a place to live. Where that is will make your decision in that if it is still in your area then you will have to consider options. IF they are moving to a different area because that is where they can get a place then you might lose the child.

IF mom still has a job I am assuming she will return to work as soon as possible. Giving the month of free childcare means it gives them a leg up on expenses so that when they start paying again they have built up a bit of savings. Other option is to then move to half the fee for a period of time - that at least pays you for your expenses plus a bit more. While doing that you should be able to get a sense of what they plan to do, how the process is going and if they are going to be able to cope or not.

Very good chance they will go a subsidy wait list meaning they will leave on short notice if a space comes up which could be next week or 2 years from now.

Guess what I am saying is the human kindness part of me would give them a month to recover at my expense and then well my kindness would start to wane and I would want a new plan in place.

It might be nice to see if some of your other parents are intersted in helping out with things for the family such as baby clothes.