[header] How to deal with your mother's abusive boyfriend [title] Offer your support. [step] If you have witnessed the physical, verbal, or sexual abuse of your mother, you should go to her and express your concern. Tell her what you saw or heard and explain your feelings as best you can. 
You may be scared, worried, or sad about the abuse. [substeps] It's possible that your mother may not want to talk to you about the abuse.