Should I ask them?

I was checking the mail to see if I needed to bring it into the house. Well I say that there was a letter in my dads handwriting addressed to a law firm. I put them back and didn’t say anything to anyone. This has been all that I have been thinking about today. I’m not sure if I should tell them that I saw it and ask what it’s for.

My dad has been divorced before he met my mom, and she knows. I’m not sure what other family members know. My parents do not seem happy in their marriage. They have been married 25 years this year. I’m not sure if they filed for divorce or what’s happening. I believe that my mom and I’s lives would be happier and just overall better if they do get divorced.

I don’t know where to post this, so I’m just gonna our this here. Anyways, I’m just wondering if you think I should tell them that I say the letter or not. Thanks! I’m also 15 years old.