True Pete "It never ends...," might as well join them!
The original plan same as the Tahoe bedroom shooting, was to kill Michael in the opera box along with everyone with him

No doubt she knew murder was a tool in their business but I reckon she didn't know or in denial that he had personally murdered until the chairman mentioned it because his absence was not addressed

Don't know Turnbull whether she made her decision to leave right after the Tahoe shooting?
She sat through the Senate hearings as the dutiful wife of a respected businessman