Back off, Mama Bear!

A mum and daughter approached the information desk at the library. Mum asked for books on assertiveness for her daughter, just into her teens. I looked at the daughter and asked her a few questions, to try and get a better idea of exactly what she wanted. After each question, as the girl looked at me and started to reply, Mum jumped in and answered the question, cutting off her daughter entirely. This happened several times. I don't think it's the daughter that has the problem ...