I went to visit my parents last night. My 16 year old sister still lives there, and had gone to a friends house but had left her mobile phone at home by accident. My mum picked it up and started trying to read the texts! I was completely shocked and told her to stop it immediately! My sister is 16, she has had boyfriends, she is about to leave school and is allowed to drink under supervision and go to a nightclub if she has one of her older sisters with her. She is a really sensible girl who does very little of the usual stupid teenage stuff, or at least if she does it she does a remarkable job of keeping it under wraps. Luckily my mum wasn't able to operate my sisters phone and i refused to tell her how to do it. I would have been outraged if my mum had done the same to me at her age. Now, do I warn my sister what I caught my mum doing? I'm in a weird situation as a grown up daughter, as I tend to hang round with my mum more and talk about childrearing and suchlike with her, and i think my sister thinks I'm embarrassing and old, but I still feel that I should stand up for her her.