Why Is My Daughter Having Her Period Several Times A Month?

I am a happy person. Both parents are biologists but I aspire to be a writer. I am younger than most on this site. Also I am a g&t writer (as in gifted and talented not gin and tonic), reader and artist. I am a young female and my favourite animal is a rabbit. I go to Burnham Grammar School. I am shy and passive but bubbly if I like the person that I'm talking to. Have a nice day people!