Lease ending before the 1st but collecting for full month?

[Matt Moldenhauer]

My niece came to me saying she had to be out on the 25th of this month from her apartment, even though she paid the month in full? I called the property manager and was able to get a copy of the contract(un-altered I would hope) and sure enough it says the lease ends the 25th of this month, instead of the last day of the month. I’ve never seen this before? They’re using her money to clean and try to get the place rented again by the 1st. Is this legal??