Mukesh said to his friend, "Rita is the mother of my son's wife's daughter". How is Mukesh related to Rita?

Abhay said to a lady sitting in a car, "The only daughter of the brother of my wife is the sister-in-law of the brother of your sister." How the husband of the lady is related to Abhay?

P is the mother of K; K is the sister of D; D is the father of J. How is P related to J?

Introducing Sonia, Aamir says, "She is the wife of only nephew of only brother of my mother." How Sonia is related to Aamir?

Pointing to a man in a photograph, a woman said, "His brother's father is the only son of my grandfather." How is the woman related to the man?

P is the mother of Q, but Q is not the son of P, then who is Q to P?