Eviction of person not in the lease

[Neha Mittal]

Hi i have a strange situation. I bought a property earlier this year which had long term tenants, the lease is a month to month with one of the occupants. His wife stays with him, and wife's daughter(Z) has been staying on and off with them. With earlier landlord "Z" had caused issues and was asked to only visit. Now she is back on the property, the tenant who is on the lease wants me to evict her. I am thinking of asking the tenant himself to leave rather than me starting the eviction process, any advice.