Wow !!
Hate to hear stories like this that damper the fun and enjoyment of motorcycle riding. Thoughts are definitely with your cousin and family...that really sucks.
I was in a pretty bad accident a few years back and I remember them telling me they were going to amputate my left leg just below the knee...talk about getting hit with a ton of bricks !! Luckily for me they decided to attempt to save it with several surgeries/skin graphs etc.... and did...even though I still have issues with the leg...ankle and foot.
On a positive note though...stories like this make me realize how lucky I was regardless...mainly because I was riding solo...my wife (then GF) was at work and was supposed to be with me but wasn't. I didn't lose a loved one in the process like you cousin...man I hate to think what she's going to have to go through.