95 degrees won't get the rodents hot enough IMO. When I was doing F/T I had the water at almost 120 degrees and they still needed to blow dry at 140 degrees to get them over 100 for more than a few brief moments. I'm going to reaffirm my original guess that the rodent was too cold internally. I would try a different process if you are going to keep feeding F/T. Sorry to hear about your loss and best of luck moving forward.
Regards,
B