Serious reactions to Rimadyl have been reported for years. The label now states that it can cause death.
USATODAY.com - Even painkillers for dogs have serious risks Rimadyl
Liver damage is a side effect of Rimadyl. Had Bella had a bile acids test before anesthesia? The FDA advises dogs have a liver function test before getting Rimadyl.
I pray your little girl will recover.