So my MIL casually mentioned that she had started doing my dad's family tree.
My dad died 4 years ago and never met my MIL. Also my dad had gone NC with his family. I never knew them they were not interested in me or my sibling.
I told her I wasn't interested and not to mention it to my mum as it would really upset her. She couldn't understand and went on about it for a bit. I just said look you can't pick your family can you?
I think that was it. But it's now eating away at me. I don't want her nosing into my family. I know that my dad had another family (much older than me) but there was complete break of ties with them and I don't want MIL finding all this out. It's none of her business.
How can I reiterate with her to not do any more investigation without it be becoming a big thing? Should I ask dp to have a word (He knows the whole story)?