I need an email written to my mom telling her I won't be able to make it home to see the truck show. Subject: Truck Show She has been mentioning the truck show for months. I forgot. I told her I would go to it. I did not take off work. With the email, tell Mom I am sorry. Ask her if Dad is going with her. Change the subject at the end so I don't leave off on a sour note and ask her if she wants to grab dinner Friday since I missed the truck show this weekend. Close the email saying you will make it up to her, and Love you, Cass. 
Subject: Truck Show

Hey Mom, 

I don't want to be the bearer of bad news, but I can't come to the truck show next weekend. :( 

You have told me plenty of times about it and how much you wanted me to go with you. I neglected to take off work for it. I do apologize because I know it was important to you. Is Dad going to be going with you? I hope you don't go alone.

I know it is not a truck show, but do you want to get dinner with me on Friday? My treat! I want to spend time with you, and hopefully it will at least somewhat make up for my absence at the truck show.

Love you, 

Cass