My sister is in the process of a messy divorce (is there any other kind?). She is still living with her H, who is being hostile and unreasonable. If I am being completely honest, she is also being pretty unreasonable - people generally are when they are getting divorced I guess!! Their only child (2.5) is, to my mind, starting to show distinct signs of stress - crying more than usual, whining, hugely increased clinginess to his mother - and this is a child who already has been very clingy - perhaps just his character but perhaps partly the result of living with two extremely unhappy and rowing parents for his entire life so far. Both parents are claiming the other one's behaviour is damaging the child, while both somehow managing to pretend that real emotional problems are not occurring in him.
What, if anything, can I do to help/support? I am worried about my nephew.