My brother-in-law (let's call him Mark) has 3 kids but it turns out the mom (let's call her Alice) is not very "maternal".
She is clearly bothered by the kids and tries in every way to avoid her maternal duties. Up till now she managed by having her mom stay with them and take care of everything (even house chores). After 11 years grandma finally managed to get back to her home and Alice tries to dump the kids with whoever she can.
I picked them up from school a couple of times and can't forget the disappointment on their faces seeing the mom had ditched them once again.
The other day we were all together for dinner and Alice said, in front of the eldest, that she prefers going to work rather than stay home and look after them, because they are "tiring". At the shocked and sad look of the daughter she reiterated "Oh yes you are!". Mark was there and said nothing.
I'm really sorry for my nieces because I can see that they suffer for Alice's behavior and would like to talk to Mark and Alice. However the subject is a delicate one and Alice doesn't really accept people disagreeing with her.
How can I help my nieces?