I was unaware of the cat being present. Just heard about this case last night when I got the notification that AWP was live on YT; therefore, I didn’t get to put in extensive research.
Interesting theory, & no, it wouldn’t be unreasonable. Accidents happen, regardless of the precautions taken to prevent them.
I hadn’t heard of it either till the new posts (thank you for that). When I read that they went to the fils home she went to in order to refill the cats dishes and both dishes were full but no cat, and the cat has never been seen again, that jumped out at me as a high potential.