I am very sorry about the loss of your baby! Without a necropsy, you may never know - you could ask your vet or another one do conduct the procedure. Here they range from $360 to $600. It could be the toxins in the liver and stress is very hard on cats but you can guess but there really nly is one way and that is a NECROPSY.
Take care in the weeks ahead. Think of the good times you shared w her! Hugs!
Take care in the weeks ahead. Think of the good times you shared w her! Hugs!