Exactly. We all assume it was Barry who murdered Honey. It could be that Honey murdered Barry.
"As for the possibility of a murder-suicide, which police have not yet confirmed, the Toronto Sun indicated that police sources believe Honey may have been killed first. Sources close to the case believe Honey may have been killed in a secondary location in the $6.9 million Old Colony Rd. house and then moved to the location where she was later found with her deceased husband, reported the Toronto newspaper. The Sun reported that police sources say there was no evidence anyone else had been in the home or that there was forced entry."
http://heavy.com/news/2017/12/honey-sherman-dead-death-barry-wife-murder/