I currently have a roommate in New York City who told me she would be moving out of the apartment. We agreed through email that she would be out by June 1st for a new roommate to move in. We are co-tennants on the lease and since then have signed a rider with apartment management saying that she gives up all rights to the apartment as of May 31st and the new roommate will take over on June 1st. It looks as though the old roommate may not be out by June 1st. If this happens is there any legal action I can take upon her on June 1st to remove her?

