ex roommate and security deposit

by Mary
(Schuylerville, New York)

I live in New York State. My former roommate broke her part of our lease in an apartment, just up and left one day. I continued to pay the rent, then sued her and won. We received the security deposit back in full, can I keep it against her judgment? We have another court date for the balance of the final months rent due and I can present the checks for signing then