Deposit return in AL

[Stacy Brown]

I have a question about returning a deposit. We had a 12 mos lease in the state of Alabama and a tenant left early. They did however continue to pay until it was rerented. Which was 11 days after their last day. They paid the full month and I am returning the rent for the prorated time of rent. So they are receiving a refund for days 12-31. 

We also have in our lease that there is an early termination/cancellation fee. The fee is the amount of thier security deposit. Am I liable to refund their deposit as well, minus deductions for damages? Side note-we had to have the driveway pressure washed because they had a transmission that dumped all the fluid and oil in the driveway. Which will not come up.