How sad...
Do you have a picture of the deceased tortoise that isn't too graphic? I know it can be hard for people to see, but it does help pound into people's heads why to ship VERY carefully, especially in this extreme heat.
Like Michael said, a time line of events, as well as any communications will help tremendously. Has Mr. Talioferro been informed of this thread? Can you share his username?
So sorry for the loss