Dear Buffalo Tenant:
The tenant made your mother a roommate when the utilities were placed in her name and she paid rent. Her legal status is similar to as you and your mother are two persons living together with the tenant who are not in a relationship (legal, that is) with the landlord.
There is a legal process to use to remove your mother. Her tenancy rights must be terminated and if she does not move on her own, the tenant would commence a summary holdover proceeding.
If you fear violence you may look to obtain an order of protection.
Whatever course you take, you will need an attorney.
The answer provided to you is in the nature of general information. The general proposition being that you should try to avoid a bad outcome if you can.
Speak to a landlord tenant lawyer to evict your mother. If your are fearful for your safety seek an order of protection. If your mother is using drugs, then explore your option to contact the police.
If this answer is helpful, then please mark the helpful button. If this is the best answer, then please indicate it. Thanks. For further information you should see an attorney and discuss the matter completely. If you are in the New York City area, then you can reach me during normal business hours at 718 329 9500 or www.mynewyorkcitylawyer.com.
The only way to lawfully oust this person from the apartment is with a summary eviction proceeding. As this is a slightly different case than a landlord seeking to evict a tenant, you should speak with a landlord-tenant attorney, as opposed to attempting to take this matter on by yourself.
This communication is intended only to provide general information. No attorney-client relationship is created.