More of a what would you do.
My DS12 was at his best friends house with a small group of other friends. A toy my son was seen playing with was found broken and a part missing that would fix it. The mum sat them all down and interrogated them all and decided it must of been my son. They all turned on him. She texted me later basically accusing my son of breaking the toy and stealing the missing part. I made it clear my son would not of done what was being said but it fell on deaf ears. The boys stopped talking and it all got nasty. Eventually things calmed and I decided to be the better person etc and just try and move on. This all happened about a year ago. My son today said his best friend admitted this morning that they found the missing part a few months ago. No apology just I found it. A mutual friend had noticed the toy was intact and mentioned it but we said nothing. I'm fuming his mum hasn't been in touch. My son has made me promise not to get in touch with her. We didn't text for a while after this incident and one of my last ones on the matter was to hope they find the missing item soon. I have text her before over other things, I've even given lifts etc but its always been in my mind.
Should I say something or leave it?