Will my driving record ever go back to normal?

I've only been in 1 car accident in my life. It was a minor one last year (my fault) where the girl's side mirror fell off and she had a small dent in her door. Come to find out all her repairs cost over $4000 to have made! My car insurance cost has doubled because this is now considered a major accident. What am I supposed to do? I'm in Machusetts, so our car insurance laws are tough. If I switch insurance carriers, will I still get a huge rate due to this one "major" accident? I am so upset. The accident was truly small and my driving record is spotless aside from this. The claims adjuster explained parts just cost a lot for her car because it's a Scion.