Using security deposit as last months rent

[Ashlee Fazio]

I have a tenant who is very unhappy who is breaking their lease 6 months early. She is insistent on using her security deposit as last months rent. I have told her that is not acceptable and would be considered nonpayment. I am happy to have her out, but unsure of how to go about this issue. If she uses her security deposit for last months rent obviously I have no security for damages or other issues or any real guarantee she is going to leave at the end of the month. Should I just contact my attorney if she does not pay rent on the 1st? I am nervous that starting eviction for nonpayment would drag out her leaving and end up costing me more money in the long run.