Help me find that book

Hey, a few years ago I had read a small novel/book for teens. I don't really remember the title. If I describe it, can anyone help me finding it?
It's a diary styled fiction book and the main character is Charlotte but referred as Charlie. Her mother's name is Johanna and she calls her mother Joe instead of Mom or Mommy. She tells about her friend Norman and her mother's boyfriend and his son Robin and how she makes Robin run away.

Any help please?

The Lottie Project.

Thanks a lot!!

Wait, why is this in storybook'

Moved to the Lounge!

Also, I believe the book you're looking for could be The Lottie Project by Jacqueline Wilson.

Edit: Oops, didn't realise you found the book already!

I'm kind of new and inactive here, so I really don't get where to put which topic Sorry.