My MIL has asked if she can take DS on a couple of days out in half term. The last time she was with him, she told him about ‘Hari Kiri’ (Japanese ritual suicide). He cried himself to sleep that night as he couldn’t stop thinking about it (he’s 10). He was also really worried that DS2 heard it too (he’s 6, but thankfully wasn’t listening. He was in earshot though). My DH has mentioned it to her (she’s abroad so communication is by email mostly) but so far she hasn’t Replied , not acknowledged what he said, she’s totally ignoring the issue and pretending it never happened. It’s not the first time she’s upset the kids, AIBU to say no to her looking after them unsupervised?