They have one DD7, and my DSIS is always contradicting BIL when he tries to parent their daughter. He’s a bit stricter than her, i.e he’ll try to limit her screentime, DN will ‘tell on’ her dad in tears, and DSIS will give her back the ipad and tell her ‘don’t listen to him’. It’s affecting their relationship - there’s often an atmosphere because of lots of tiny little arguments over DN, which she sees all of.
I feel as if there’s a pecking order with him at the bottom. DN constantly speaks to BIL with rudeness and sarcasm - probably because that's what she sees.
I recognise this exact dynamic from growing up with our parents. It gave me terrible anxiety because I felt like I was always causing arguments, and trying not to choose a side. I was also disrespectful to my dad, with impunity. I’m worried that my sister and BIL are playing out this scenario with DN, and that it’s making everyone unhappy.
I’m sure I’m massively oversimplifying here, but I just feel if they could present a united front it would fix many of their problems. They’d respect each other more and argue less, and DN would know where she stands.
They’ve all had a very tough time with bereavement and illness lately, so I don’t want to upset my sister. I also feel hesitant because I’m childfree – it’s only because I recognise the situation from my own childhood that I feel I must at least try and help them if I can.
How can I broach the subject in a positive way without hurting her feelings, or appearing to blame her?