A question about Obsessive Compulsive Personality Disorder...?

My mum has never been the easiest person to have around and her mental health has deteriorated a lot over the last 15 years. She definately suffers from anxiety disorder, has panic attacks, is very hyper active and most of all very controlling. She was a nightmare to live with but even though im in my mid 30s with a family, she cannot help herself from trying to control my every decision. With regards the OCD thing - she is obsessed with hygiene (not tidiness because she is not tidy in fact very disorganised). thats fine once she keeps it to herself but she calls every day to clean the dogs poo from the street i live in, to clean the wheels of my babies push chair!!?? She washes her hands over and over and tells anyone who comes to the house to wash their hands. She is also terrified of contamination of all kinds - even that from detergents (thinking there is a huge conspiracy amongst the manufacturers to poison us all). She gets aggressive with me if i dont use eco friendly EVERYTHING, and has caused huge problems between myself and my partner because she says he shouldnt wash his hands in the kitchen sink. Sounds ridiculous but its really making me depressed. Ive been around in circles with her for YEARS and have tried everything from ignoring this behaviour, trying to talk to her about it, and also tried cutting her out of my life because of some very serious crazy episodes involving my children. She spoke to a therapist and did take prozac for a few months a few yrs ago but started to think the pills were going to poison her and fell out with the therapist when she tried to address any of her issues. Any advice?