Legal Question in Technology Law in Illinois

I see no one has answered you in 10+ days, so I will try to give you an answer (I'm a FL attorney).

It is illegal under federal law (and maybe under your state law too) to access another person's email without authorization. Usually, this involves "hacking", but the statute is worded broadly enough to include any unauthorized access. So, technically, this was probably a federal crime. However, it would never be prosecuted, in my opinion. Federal prosecutors are far too busy to deal with matters such as this.

Whether they share the information with your parents is a completely different issue. I know of no law which would either allow or prohibit them from sharing the information with your parents, and no law under which your age would have any bearing on the matter. Again, I'm a FL attorney, and perhaps there is an IL law which speaks to this.

I can think of some exceptions to what I have said. If the emails were threatening to hurt yourself or others, the person may be perfectly justified in sharing the information with anyone, including law enforcement. The person may also have a professional responsibility or obligation to report it as well.

I hope this helps just a little. I didn't want your question to go unanswered. If you have further questions, you should seek the counsel of an IL attorney.