“she had to have an unreported/untreated heart condition”
According to her family, she said she had an irregular heartbeat.
“At Thanksgiving time, Loretta had told them that she had some kind of irregular heartbeat. She said at the time that she planned to get it checked out.” Fuddy’s sister and brother-in-law December 30, 2013 statement to NTSB
The claim that Loretta had told them over Thanksgiving dinner that "she had some kind of irregular heartbeat" "that she planned to get [] checked out" is a mighty convenient recollection!