Um, yipes. Tata Ndu tells Father that Rachel needs to have a "circus mission" (3.12.4).
Little Ruth May has mixed up the words a bit. She's not talking about elephants under the big top; she's talking about this.
Ruth May believes she got sick because she saw Mr. Axelroot's diamonds, and him being around all the time makes her feel worse.
Finally, she's decided where she'll disappear too with her nkisi if she finds herself on the verge of death: up in a tree, "same color, same everything. [She] will look down on you. But you won't see [her]" (3.12.8).