Why did she just drop that topic? It is super sus. Either uncle is hoping for her to mess up and die, preferably dragging everyone related to her with her (father, uncle, branch families, etc.) by messing with royalty, or they know who she is a reincarnation of (prolly from childhood status-check) and "serve" her, or she is slated to become a sacrifice, so they figure the only kindness they can do for her is to let her have anything she wants while still alive.