Or it means that person is being abusive and instead of wasting time trying to view them like an abused dog that actually deserves pity and compassion, its best to see them as an abusivie toxic person and avoid further contact with them and be careful NOT to rationalize their abusive behaviors towards you as them 'not knowing any better' and 'just being frusterated'. My advice kinda contrary to yours I guess would be the OP should work on what they need to do to take care of them-self, and find help and support to dismiss their moms words as verbal abuse and have support coping with having to go through that. Certainly not consider 'well what did I do to create the monster my mom is'.

Sounds like the OP's mom is emotionally abusive, she'd be the one responsible for the abused dog cowering in the corner I just don't think there is a good excuse for encouraging people to kill them-self or otherwise harm/neglect them-self or other verbal abuse/manipulation even if the individual doing it might have had a bad experience or multiple.