Tenants requesting advanced rent returned

[Tom C]

Just wondering what everyone's opinion on this is. I have a mom and daughter who usually pay rent 6 months in advance, due to the fact they cannot control their spending. Well they called this morning and they have had car trouble and would like Jan's rent back. Of course I told them I would do it, but I can really see a real downside to this also by allowing them to do it. I have no idea what the laws are in regards to something like this since we have a month to month lease.

Any opinions?