Gosh. Having supported a friend's child through a process which looked like it was heading towards exclusion, and ended up with Sen support, as well as teaching courses on challenging behaviour... I am really surprised YellowMeeples set up is allowed or considered a good idea.
Certainly OP you need to work with the school. Identify what "triggers" the behaviour, what they could do to support her (for some children for example they have a card they show when they are finding everything too much and can escape for a couple of minutes to avoid exploding. Others need a visual timetable etc etc varies for each child.)
Have you had a lot of meetings leading up to this? Have they said what support is in place? We had someone from the council sit in who had some good suggestions as well as helping to veer towards inclusion.
Is there pastoral support in school? How is she at home? How long has adhd been suppected? Adhd (underdiagnosed in girls) often leads to a child being labelled as naughty/behavioural problems when what is needed is support for their condition, managing anxiety and triggers (possibly medication!?). Repeatedly being told they are "bad" for something they haven't yet learnt to control is a downward spiral.
Just being told "to behave" rarely works if the child is already struggling.
There are so many unknowns here.
Have they just escalated punishments to a "final warning" or has there been pastoral/sendco involvement.
Have you had any support with this OP?
Theres a good book called The Explosive Child which is often recommended. But right now school is the worry a d working with school to support your child.
Sendias can help if a special ed need is identified.
Sorry for the waffle as Ive not slept but wishing you all the best.