My question involves landlord-tenant law in the State of: Virginia

I live with three roommates. One is a roommate from hell. The other roommate and I want to leave and have given a written letter of notice to Management. Management says we can't leave unless Hell Roommate signs off on a lease termination document. Hell Roommate will not sign off on this out of spite as she is incensed that we are leaving. She also is refusing to meet with potential applicants to replace us as well, leaving us in a tough situation.

The other roommate and I have already signed the lease termination letter and informed Management and the Hell Roommate we are leaving. Can we just leave?