Strangely, when our DS was home for Christmas he saw his brother, who cut us out of his and our only GC's lives more than 5 years ago.
I never ask about them but Mr. S. sometimes does and during a conversation with our DS, he was told that they'e having trouble with the youngest. He's becoming aggressive, pinching and biting, and his speech, or lack of it, is giving cause for concern.
When Mr. S. told me, instinct kicked in so I suggested that DS suggest to his brother that they get the child's hearing checked. Aggression could be frustration due to him finding it difficult to make himself understood as he's not hearing words correctly.
DS looked rather
and asked me what had made me think of that so I said well I'm a mother and all be it in name only a GM so I guess it's instinct.
I told him it might be better if he didn't say the suggestion came from me. Of course I don't know if any thing's come from it as I've not asked.