Miss Dorothy visits the clinic and mentions that she had meals at the boarding house. She remembers that the kitchen was in the room that is now the exam room. Miss Dorothy does not mention Miss Charlotte. In another episode Miss Dorothy shares with Brian that she and his mother, Miss Charlotte, were close friends and had picnics together weekly. Seems like Miss Dorothy would have mentioned Miss Charlotte when she was reminiscing about the boarding house.
Snow Bird was married to Cloud Dancing first. She would always be the first wife, even if Cloud Dancing marries his brother's widow.
Dr. Quinn acts surprised that Sully knew Dorothy Jennings. Sully was married the the daughter of Maude and Loren. Dorothy was his aunt-in-law.
Miss Dorothy is wearing a dress with a zipper. Zippers were not available in the US in the 1870s.
Dr. Quinn goes to church with her adopted children. They are wearing hats. She is not. She should be wearing a hat. She is from an elite family of Boston.