Abusive Parents: Uncle Matthew and Aunt Sadie aren't exactly abusive but don't seem to be able raise their children well, they don't give their girls much of an education and don't take in the changing times so raise them to Victorian ideals.
Amazingly Embarrassing Parents: Aunt Sadie might be distant and unforced but Uncle Matthew is an nightmare. The fact that he is based on the author's father is worrying.
Deathby Childbirth: Linda's fate. The Doctor's did warn her that this might happen if she had a second child.