A little back story, I do not have a relationship with my father - he was abusive to my mother in front of me as a young child, put girlfriends first, broke promises, left me waiting for him to pick me up with no call and no show and lied to me the whole time I allowed him in my life. I cut him out for good when I was 16.

My mother - emotionally and mentally abusive. I've always had to tiptoe around her, be on my best behaviour and even at 41, I wanted to please her. I feared rejection from her, she was my only parent after all.

My mother despises my partner. He and I have been together for almost 8 years now. He treats my son like his own but because of how things happened at the beginning of my relationship with him, she's held it against him. Anyways, she stopped talking to me for not sticking up for her. She told my son (age 11 at the time) to put peroxide straight on his teeth with a q tip to lighten 2 yellow spots. My son had asked my boyfriend to help him open up the bottle. My boyfriend asked why, thinking he was hurt and trying to tend to a wound. When he found out why, he said it was "stupid" and to wait for me. I agreed after reading up on how it can weaken the enamel and when he turned 12, I would buy him a whitening kit. My son told my mother who refused to talk to me. That was in May.
Fast forward to a few weeks ago when my son and her were talking. He's 12 now and hormonal and as a typical pre-teen he has moods. He gave her a little attitude and she screamed at him and hung up on him. My son, not wanting to go over there asked his father to tell her he was staying with me on the weekend and not going to her place. He couldn't do it so I had to. I emailed her and said he wasn't going over. She replied to me a few days later wanting to work through things but also had some personal "digs" as my son told her I blocked her on Facebook and she's not a serial killer so she doesn't understand why I would do such a thing.
I explained that I limited what she could see, she was never blocked but I wasn't ready to talk to her and I was over the silent treatments she gives.
She replied that it was messed up to say and she wasn't giving me the silent treatment, she was "taking a breather" (you know...those last 6 months).

Anyways, since I refused to reply to her emails, she sent my son home last night with my grandmothers jewelry and my spare house key. Wants her back and a few things she had given me from her childhood (that I don't have anymore, I lost my storage unit because I couldn't afford to eat and pay that and they wouldn't let me in to sell some stuff to pay what I owed...which is understandable). She also told him that "she should have done to me what my father did and I should consider myself an orphan".

I know she obviously has mental issues but this hurts. I feel like I must obviously be a horrible person, why else would both my parents want nothing to do with me? Are these feelings normal?

Typing this all out sounds childish...