I really need some advice please.
I have a mum friend who is displaying extreme signs of abnormal behaviour. We have a group of mums (there is six of us) but this particular mum bullies us and I’ve found out she’s made WhatsApp groups and singling out each of us to talk behind that persons back. She’s befriended the whole of the school mums and does these lavish parties to show she’s so cool but really she’s hot and cold, constantly swears, shouts at her kids, uses us for money if we go out, has told us her husband is in therapy (most likely because of her) and makes catty remarks to me about my hair and makeup (I’ve had brain surgery recently so I’m starting to take care of myself again). When I speak to the other mums in our group they say they are aware and she has a mental health condition so no point in addressing the behaviour. I feel it needs to be addressed because she’s using us. She will ask me to collect her child (but her child fights in the back of the car with my daughter), she asks me for lifts to the school (but she has her own car), she bitches about me to the other mums that apparently I don’t host enough playdates. We then hear that certain mums are cutting her off because they are clearly finding out what’s she like in the end. I believe she has narcissistic personality disorder because she wants constant attention from everyone and if you don’t comply with what she wants she turns nasty - there are stories of where she’s ruined people’s lives and turned other mums against each other. I don’t know what to do because my child is in the same class as her child and I don’t want my child to be shunned out because this mum hosts all the parties and she is the link to all the other mums. I have no idea how she’s managed to convince many that she’s normal. I feel scared to be around her. In the past I’ve left my daughter with her and my daughter has been upset when she’s come home. I now know to never leave my child alone with her. The other mums in the group say they are only having this connection with her for the sake of their children but in reality they are just scared and don’t want to speak up. She constantly hassles me and calls me for coffee meet ups and even challenges me on the group about why I haven’t done a playdate yet. I’m still recovering from brain surgery and obviously someone with narcissistic personality disorder has no sympathy for others. It’s causing me a great deal of anxiety because I have to watch other mums being bullied - we shouldn’t have to live like this