My question involves landlord-tenant law in the State of: Texas
Recently my apartment complex gave my mother a key to my apartment with out my permission. She is not in the lease nor is she an occupant. I did give permission for them to let her into the apartment, while I was at work, which they said they would walk her over and open the door for her. My mother has a history of mental illness and her having a key to my apartment is not ideal. The other issue is that she lives in another city and I am unable to get the key back. So when I move out I will not be able to turn that key in and will then be fined for missing a key. I need to know my rights as a tenant in this situation.
Are they allowed to give her a key without my explicit permission?

