I have voted YABU
I’m sorry OP, but I have found your thread a particularly distressing read. The update about how your daughter’s life and relationships with others is controlled is awful.
You have allowed your DD to be continually exposed to this controlling manipulative BULLY since she was 4 years old.
You have missed so many opportunities to sort this out when they were much younger and you had more control over the situation.
You are clearly aware this girl is a bully from all your posts and bizarrely on here, you are describing her to us a your DDs best friend. Why? I find it completely odd.
I don’t know why you don’t have any confidence or the ability to stand up for your own child and take action. I expect you have suffered abuse yourself in the past and you have my sympathy.
However, please don’t pass your behaviour down to your DD. It is terribly dysfunctional. Protect your child. It is your job, even though it is hard.
It is only going to get harder.
Good news is this is solve-able, (because you are an adult and they are still children) even though it is going to require some drastic action.
First step is simple. Stop referring to her as a friend on here. Practice it. It will help with your own mindset.
Your DD is better with no friends at all than this bully who is systematically breaking her confidence piece by piece. You won’t know the worst of it.
Please do her a favour and move school. Your DD will thank you (probably not even too long into the future). And do it very quickly to minimise the bullying and escalation that will happen in the interim from this girl. Go into the school in confidence (do not tell your DD) and explain exactly what has been happening and ask for help. Ask them to move your DD to a new form in the interim. Do not back down from moving her.
From today, do not allow her back in your house (personally, I wouldn’t bother with the parents now, this has gone way past that). Protect your DDs safe space.Show your DD that you have boundaries and can protect them.
Presumably at 12, you have full control over your DDs phone? You know where she is at all times through find my phone?You have full sight of what she is looking at on her phone? Once she leaves school, block the bully.
Get your daughter to a therapist.
💐