Susan Price is a character in Mansfield Park. She is the younger sister of William Price and Fanny Price, and is one of ten children of Mr. and Mrs. Price. Through Mrs. Price, she is the niece of Sir Thomas and Lady Bertram, a baronet and his wife; and Mr. and Mrs. Norris, a clergyman and his wife.
One of her most priced possessions is a silver knife her late sister Mary left her on her death. Her youngest sister Betsey occasionally stole it from her until Fanny bought her a new one.
When Fanny returns to Mansfield Park, after Maria’s folly and Tom’s illness, Susan travels with her. She has a more bold and curious temperament than Fanny; combined with her foreknowledge of her extended family from Fanny’s stories and letters, she adapts sooner to Mansfield Park than her sister did initially. Susan becomes the stationary niece and companion of Lady Bertram, eventually becoming more beloved of the two by her Aunt. This does not bother Fanny, as she still has a close relationship with her aunt and eventually became her uncle’s favorite.