Queen Camilla is the “yin” to King Charles III’s “yang,” despite fervor from many Diana, Princess of Wales, fans who refuse to support the Queen due to the turmoil they feel she caused in the King’s first marriage. “She is his rock, and I can’t actually emphasize that enough. She is somebody who is completely loyal, and she isn’t somebody who has huge highs and lows,” the consort’s sister, Annabell Elliot, shared in a new royal documentary. “He brings to her everything, I’m not talking about all of this, but you know he has such a knowledge and interest in so many different things which she wo…