What Did Jay Darling Say About Wanda's Death?

Jay Darling had already admitted that he tried to defraud life insurance companies out of a small fortune. Did he also murder his trusting young bride just to get his hands on the money? The defense was going to tell its own very different story of the death of Wanda Darling. Surely this simplest explanation is she got a little push from behind. If you think that simple case then you may have a talent for crime.