Can a mother have her abusive 19-year-old son removed from her home?

Yes. He can be evicted from the home. The mother may also be able to obtain a protective order, depending on the laws in the state. The order would remove him from the home and eliminate or reduce contact between them.

The mother may also choose to contact the police and report the physical abuse. If he is arrested, she can request that if he is released on bond that the bond prohibit contact.