A terrible loss...and it sounds like the experience with the insurance company may be adding insult to injury.
I never had a litigious bone in my body until I tried to fairly settle the value of my car after a teenager hit me and totalled it a few years ago. They tried to strong arm me into a settlement for too little money until I involved an attorney friend...not an injury lawyer...but a firm skilled in insurance work on both sides of the table.
You can't replace the memorabilia, but don't let the insurance company add insult to injury.
If you don't grow where you're planted, you'll never BLOOM - Will Rogers