Boo.
Putting down any animal is awful.  Even if she did have projectile diarrhea a few times, it's still bad.  In my lifetime, I have put down two kitties (Sasha and Amber, no, not Amber Shepherd, or Winter I guess it is now) and I just felt sick.  And sad.  For a long time.  I still miss them.  I even miss Sasha's removed, cancerous ears.  And I miss Ambers lack of fat due to weight loss from diabetes.  I miss everything about them.  So everyone pour out some projectile diarrhea, cancer bits and such for our fallen animals.