So my family have been going through a bit of a rough patch recently. My Aunt and Uncle have just split and that's all I really know. My mum has been on the phone constantly arguing with other people and reading out texts and reporting back to my stepdad (who isn't even a part of the family by blood) all the time and to be honest I'm fed up of hearing little bits of it but not the whole story, she's my aunt for fucks sake. Whenever I ask my mum what's gone on she'll just say "it doesn't concern you so stay out of it". Yet my 16 year old sister who lives on her own 20 miles away knows EVERYTHING, and says she's found out about all of it from mum who called her specially to tell her but even she'll refuse to tell me as it "isn't her place". Why does she do this?