Recently had an unauthorize individual in my outlook email account

I have an idea who got into my email , I have the source info and I.P. Need someone to help me find out who this is so I can get the police involved an press charges. There has got to be a way to trace where this came from or where she logged into account from etc. This person composed emails from my email , along with forwarded messages. I have it all in my email ..banking etc , paypal ..an personal info.