Our AD started Y7 last September. Until Christmas everything seemed to be going OK. Since returning this year she seems to have become very isolated and is hanging out in lunch/ break times completely on her own. She recently said she'd made some friends a couple of years older, alarm bells started ringing, before I had a chance to investigate there was an incident, The girls in question are from Year 10, The other day in break the girls and some of their friends surrounded AD and wouldn't let her past and started teasing her, she reacted by lashing out. One of them went to get a teacher who ended up blaming AD for incident and placing her on report. I have since emailed the school saying how threatened and anxious the incident had made her, also for clarification that they hadn't used their phones and recorded it. I have had no response.
Am I over reacting in thinking this is a safeguarding issue and should have been handled differently?