Why Did The Rudy Syndicate Want Yovanovitch Fired?

As details emerge out of the Ukraine impeachment drama, we still have no clear explanation for why members of the Giuliani criminal syndicate were so intent on getting Ambassador Maria Yovanovitch removed from her post in Kyiv. In her testimony, even Yovanovitch seemed genuinely mystified about just why they wanted her out. It is still possible there was something specific about Yovanovitch that made her an obstacle to the criminal enterprises or corrupt business deals of Parnas, Giuliani, Lutsenko or others. But that seems unlikely. We lack specific proof. But here I think is the explanation. It is my guess based on piecing together various bits of information generated so far in the impeachment inquiry.