Qieenie was in a fight with her husband Arthur as usual. He had in fact had been drinking that night and she jut couldn't stand him.
Qieenie states that her husband was going down the stairs to get a drink but she was chasing him up the stairs and then pushed him backwards. She also claims that he was in his pajmas but he was in a tuxedo. So he must have been planning to go with her.
Qieenie then went to the club so it would look like she did this is her regular but this would insure her a chance to get away with her plan.
She then tells her friends to stay outside because she is making sure that her husband is dead. But in the picture who could possible be taking the picture. It must be her friend who helped her out to.
She then put a mug of beer witch was full and she said he was going down stairs witch is false he was clearly going up the stairs to get away from her. Who is taking the picture it must be her friend.
This is my evidence to why I believe that Mr. Athur was tripped by his own wife. Detective: Claire Mailloux