Tenant on food stamps asked If I accept Gov Funds

[Andrew Adam]

I have a tenant on food stamps who was at the social security office and saw me at the property when she got back. She asked if I accepted gov funds, like if she got help with rent. 

My question is I do not accept partial payments and I charge late fees if not paid in full by the 5th.  What happens if the gov sends me a check for part of the rent and then she does not pay the rest on time? How do I still get Only full payments? And how might the late fee thing work if the gov pays part on time?