A friend's DS (8) is in the same class as my DS. He comes home with us a couple of times a week while DF is at work. He has ADHD and is a handful, but we are all generally fond of him. DF helped me out a lot when I was training and sitting exams so I am really happy to return the favour. He is an only child and enjoys being with my DC.
Lately, his behaviour has become unmanageable. His outbursts involve colourful language and loud screams. Over the last week, he has started stealing small things from DS and then lying about it when challenged. When we mentioned it to DF, she said that she wanted to discuss it with us as there were other things she had found at home. She looked quite embarrassed.
She is very keen on positive parenting but I really feel that this doesn't help as there are no set boundaries that I can see. Just a lot of pandering and soothing when he gets frustrated (which is a lot). I also don't know that much about ADHD, but I know self control can be an issue.
I don't want to tell DF that her son can't come round anymore, but I do need help to find the (kind) words to tell her that I feel very strongly about this. I also need to figure out how to manage his behaviour in future. On Friday she invited us all around next weekend, which we had accepted, and so I was planning to start by telling him that we won't be coming because we are all sad that he has been taking our possessions home without discussing it with us. (So as not to drip feed, I have an ASD child and know that antisocial behaviour can be isolating for parents, and I really do not want to put this on DF. My DC are generally quite tolerant and accepting as a result of our ASD DC, but this is new to us!)
Beyond that, I have no idea? My DS is really really upset, and I feel that I have to support him.