Tenant lost job and last months rent

[Keith A.]

We have a tenant that lost her job but got a new one shortly afterwards. She mentioned the new job is withholding the first paycheck and that she would need to be late a couple weeks to catch up.

She paid deposit, first and last so would there be any issues using her last month for May and then she would be responsible for the rest of the lease and have to pay the last month? If so, would you create a document to that affect and have her sign it indicating last month is being used early?