So my mother is a landlord, and she wants to kick out a tenant that isn't paying rent.

I asked her if she was seriously going to kick someone out to the streets, and she said that the tenant has family and they could seek help from them.

My mother threatened the tenant saying that if they don't give back the key, she would go to the civil guard.

I need some ideas about what to tell my mother to try to stop her from putting someone on the streets. Any help is appreciated.