Wendy is the WORST and ruining the show (mild spoilers) I wish the showrunners could make up their mind about her character. In Season 1, she was just awful and meant to be hated. She was selfish, arrogant and manipulative but at least she was beneficial to the Family's main goal.
Season 2, however, she was actually a good character and enjoyable to watch. Her political skills greatly helped and she seemed to be on a path to being likeable... until the final episode of the season.
Then there's Season 3 where she actually starts ruining the show. She's more selfish and arrogant, but also coming off as very stupid and dangerous to herself and the entire Family. Her biggest problem, which I blame the writers for, is her interactions with Navarro. He's the head of a brutal Drug Cartel and she's fully aware of what he can and will do, yet she talks to him like they're equals and doesn't show respect or fear. Then when he gets mad, suddenly she remembers who she's dealing with... until the next time they talk and she's back to being arrogant and ignorant.
This is the first Episode of Season 4, and less than a hour after what happened to Helen she's denying Navarro's request. She has a political campaign history, how simple is it to just lie and tell someone what they want to hear (especially when saying NO can get you killed). Then she is a total hypocrite later with Jonah.
As of this episode, everyone in the family would be better off if she was dead and there's no evidence from the past 11 Episodes to suggest otherwise.