She can't be Queen, not being royalty except by marriage.
If William becomes King, Camilla is not even Queen Mother (that would have been Diana's title, had she lived).
Hope she has her bug-out bag packed.
Shebecomes Queen Dowiger.
Camilla will be protected. Charles will have already seen to that. The former Queen Mother was the former Queen. She was used to a high level of public appearances and interactions. Camilla is mother and grandmother of a close family. Her focus is Charles, outside of her descendants, and it’s unlikely she would have any interest in being prominent if it wasn’t to support him. All the recent gossip has been about Elizabeth’s support for Camilla to marry Charles.