Name changed in case the mums are on here, long back story so bare with me.
When my DD was at nursery she was inseparable from another girl. As a result of this I became very good friends with the girls mother. We used to meet each other socially and text each other virtually everyday. As they were approaching reception age I felt that my DD shouldn't be so reliant on this girl so I asked the nursery to change their days so they weren't together. I told the mum it was due to my work so as not to hurt her feelings. My DD then became friends with a girl who was also friends with my friends DD.
The problem came when the girls all started school as my DD then didn't want to play with my friends DD. My friends DD had some tantrums at school because my DD asked her not to play with her and their mutual friend. My friend then approached me to say her DD had come home from school upset and asked what was going on. I let slip about separating them at nursery and she went mad, accusing me of lying (OTT) and since then we haven't spoken.
I then became really good friends with the mum of the mutual friend to the girls. We started going for coffee and meeting at the school gates. My ex friend then started getting upset accusing us of talking about her and to be honest it ruined my DD's first year at school.
They are now in their second year and the mum of the mutual friend decided to move her DD to another school. My ex friend is what I call a PTA mum. She's involved with everything to do with the school and she's all up the other mum's asses, talking to them at the gates etc.
I now find myself stood alone at the gates because I can't join in conversations with the other mum's as she is there. My DD doesn't have many friends and I've tried inviting children back for tea but never get an invite back.
AIBU to speak to the head that I feel bullied and excluded?