Alice and Bob are married. Alice's sister, Carol, is married to Dave. Emily is Bob and Alice's daughter. How are Dave and Emily related, and does Dave have parental authority over Emily?

Provide a very brief response.
Dave is Carol's husband, and Carol is Alice's sister. Alice is married to Bob, and together they have a daughter named Emily. This makes Dave the uncle of Emily, as he is the brother-in-law of Emily's mother, Alice. In a family structure, an uncle does not automatically have parental authority over a niece. Parental authority generally resides with the parents, in this case, Alice and Bob. Therefore, while Dave is related to Emily by being her uncle, he does not have inherent parental authority over her. Emily's legal guardians and the ones with parental authority are her parents, Alice and Bob.