Complex sentence: The new production upsets Anna, who realizes that Flo's world does not revolve around just her, and she becomes envious of the attention he pays to Audrey and divorces him after walking in on Flo and a drunk Audrey at the wrong moment.
Split into simpler sentences: The new production upsets Anna, who realizes that Flo's world does not revolve around just her, and she becomes envious of the attention he pays to Audrey. She divorces him after walking in on Flo and a drunk Audrey at the wrong moment.