Returning Security Deposit for Tenant not on the Lease?

[Mike Obrien]

Hello Everyone,

I am a new real estate investor and recently closed on a three family property that I plan to house hack. I have one of the tenants moving out March 1st and I am moving in right after. I found out at closing that the person on the lease is different than the person living in the unit (Same last name). If the tenant keeps the unit in good condition which I believe she will how should I give the security deposit back when she is not on the lease? I will also note that to my knowledge she has been the only person living in the unit over the past year.