Advice for dealing with my narcissistic mother.

Hi! I've posted some of my stories that related to topics others posted, but I need some advice. I have been in therapy for a few years now due to my past, and the abuse I've suffered at the hands of my adoptive "saints". If you want, ill give you examples. But at the in distance of my therapist, I moved out with my 11 year old daughter and went no contact with other her and my father a year ago. (I'm 32, I lived with them because I was a single mother, and my child has multiple disorders, the is non-ambulatory, and requires a lot of assistance. They made me believe that I couldn't do it on my own, that I was a bad person and a bad parent and couldn't be on my own, that it would be selfish to try). They still try to get at me, all the time. They somehow transfered my phone from my own account, to their own and shut it down. Leaving me boneless with a severely disabled child. They hacked into my email account and shut it down, and so many other attacks. Just yesterday they came to my house and sent my disabled adoptive brother to my front door with birthday gifts for my daughter (5 dollar store items that were made for children around 3.... My daughter is 11 and mentally 11 even with her disabilities. A glass table tray that my mother had for like 30 years (she kept perfume and crap on it) and some old perfume and lotion that she got from a lady at her work that died, she got it while we we're helping clean this ladies house after she passed, my mother was just bagging up her stuff and TAKING it.) why even bring that crap over, why the he'll is she giving my child her trash?!.) the help I need is This; do I write her an email telling her to stop? You have to understand that with a malignant narc, any sort of supply makes them happy. Me being upset or hurt makes her happy. And anything I say will be twisted and spread around to everyone she knows. But I do not want these people to keep showing up at my house and upsetting my child. She has been through enough. If you have questions about the situation to better understand just ask. Thank you.