I may be way overthinking this, but I am trying my best to keep a calm home.
I have a fairly open house policy to my kid's friends & a few other local kids. They come round sometimes to play, hang out, have the occasional snack/drink/use the toilet & get minor cuts/bruises treated when they're playing out (we're in a quiet cul-de-sac with access to local small park). I like knowing that these kids have somewhere safe to go if needed.
Both my DS10 and DD8 are neurodiverse, and most of their local friends also have ND traits (ASD/ADHD, some diagnosed) so it can be a lot of work to balance conflicting needs between a group of them together. When they get on well together, they are great, however, small disagreements can escalate into fireworks quickly. The group are generally good at accepting & understanding of my kids quirks/meltdowns when they become dysregulated, and I try to offer the same in return.
One girl (Child A) has started to come round more over the last few weeks, mostly tagging along to join the eldest of the friends (13). I don't know her well, but my kids like her well enough to have her hang out sometimes with another couple of friends.
There was an incident recently, where another girl (Child B - ADHD with emotional regulation issues) was getting ready to leave, to find that her packet of biscuits was missing from where she left them on a table. The other kids denied all knowledge of where they were, though Child A had a smirk on her face. Child B challenged Child A, and was becoming increasingly upset and screaming at her. Child A continued to deny hiding them & was blaming another friend. As I tried to help calm Child B in the hallway (along with her mother who had come to get her home), the biscuits magically reappeared on the table 🙄
After a few angry words, Child B left (along with the aforementioned biscuits!). After briefly speaking with the remaining friends about playing "pranks", I asked the other kids to leave at that point, as my DS was getting overwhelmed with the conflict.
I am getting a sense of "mean girl" vibes from Child A from this incident, especially as I have since heard of a few other things she has previously done/said. She presents as fairly quiet & innocent, but seems to like stirring situations to get reactions from others.
WIBU to not allow Child A in to hang out anymore.
YABU - Child A was playing a childish, but harmless joke, that escalated due to Child B's OTT reaction. It's just biscuits...
YANBU - It's not about the biscuits. Child A has shown they can't be trusted & should face consequences for their behaviour & lying about it to cause upset🤷🏻♀️