Congress has jurisdiction over SCOTUS appointments, impeachments, and selection of new justices. In the past the court has had as few as 6 justices, 9 being the highest in number and most recently 9 being a full court.

Nancy has the power to hide RBG's absence as she has delayed and been outplayed in one procedural motion after another.6

Means she has the power to hold up her death notice, re-appointment, and or votes.

Playing it blind though, very rrisky rrrabbit.