Legal Question in Real Estate Law in Pennsylvania

First, you have the right to sue her to enforce her obligation under the lease for the rest of its term. You do not have to refund her deposit at this time, since she did not vacate and turn the property over to you as she should have at the end of the lease term.

Second, was the boyfriend also on the lease? If so, and if the lease has what are customary provisions, his obligations would be "joint and several" - that is, each of the tenants was fully responsible for the obligations under the lease, not 50/50. Thus, so long as he keeps paying all of the rent due and does not otherwise violate the lease, he may stay without a new lease.

If the boyfriend is not named as a co-tenant in the lease, you may allow him to remain and probably should have a written agreement with him.

THIS RESPONSE IS NOT LEGAL ADVICE, SINCE I DO NOT HAVE ALL OF THE INFORMATION THAT WOULD BE REQUIRED, AND I DO NOT HAVE A REPRESENTATION AGREEMENT WITH YOU.

* If the answers to your question confirm that you have a valid issue or worthwhile claim, your next step should almost always be to establish a dialog with a lawyer who can provide specific advice to you. Contact a lawyer in your county or township.

* Another reason for contacting a lawyer is that it is often impossible to give a good answer in the Internet Q&A format without having more information. The unique circumstances of your situation and things that you may not have thought to mention in your question may completely change the answer. If you want to be sure that you have a complete answer to your question and an understanding of what that answer means, establish a connection with a lawyer who practices in the area of your concern.