I don't see Kamoola going quietly into retirement from being VP. I always saw her as Brandon's assassination prevention policy - as her numbers are far worse than Joe's. So if she doesn't cooperate and they spill the beans on Kamoola to get her out, then she's done.
I guess it comes down to how bad "THEY" want Joe and Kamoola out of the way and how much Kamoola will cooperate to allow Gavin in.
If this is the plan (and I'm not yet sure it is!) guess the people who covered up the second shooter in Dallas 11/63 have no trouble trying to pull another fast one to keep Trump out.