I faked my honor roll

The last quarter of my Junior year in high school I had a 82 in AP statistics. I knew I couldn't get an A so I worked hard for the last week to get my grade up to a 89. The Sunday before the last week of school I had to drive up to my University to move into my dorm for the summer. One of the other kids who got into the same program I did picked me up from the airport. He worked very close to my school so he offered to drive me there to print out my honor roll certificate. I drove up to the school on a Sunday when no one was around, broke into the school, and printed out two honor roll certificates. One with a 89 and one with a 90. I went to the honor roll ceremony and gave the 90 one to my mom. She still has it in her office. She was so proud of me and I felt like the biggest piece of shit on the planet. It's been 9 years and I still feel guilty, but she still has that certificate and I don't want to break her heart.