My 11yr dd is driving me and dh up the wall.
We cannot talk about ANYTHING together without her butting in, interrupting, saying we are wrong, disagreeing etc.
Anything we need to discuss privately, we do so when she is bed and we do include her in alot of the conversations, but, if we are talking about anything from shift work, mutual friends, music, films etc she always have to have her say.
A friend came over the other day just for a chit chat and she deliberately positioned herself so that she could listen to everything that we said, even when I told her to stop it play with her sister and her friend who had come over.
She also shows off when ANYONE comes over, even her friend who comes over every day, when she is told about it she gets worse.
I am literally at my wits end with her.