Kris Jenner went to social media on Friday to dedicate a tribute to Tristan Thompson’s mother, who died unexpectedly on Thursday.

“I am so heartbroken by the sudden passing of Tristan’s mom, Andrea,” Jenner wrote in her tribute to Andrea. “My thoughts, prayers and all of my love are with Tristan, [his siblings] Amari, Dishawn and Daniel. You were the most amazing, dedicated, devoted, and selfless mom and such a loving, kind, and fabulous grandmother. What a blessing you were to your family!!! I will miss you Andrea. I will miss your bright spirit and amazing light. Thank you for always praying for us and lifting us up and encouraging us along the way. Rest in peace beautiful angel.”