Bonnie gave Barbara a beautiful painting that Betty had given to her and that Betty got from Beulah. Barbara commented that the beautiful painting looked like one that her grandmother Beatrice brought to America from England. When Beatrice asked Bonnie about the beautiful painting that was given to Barbara, Bonnie said that she got the painting from her mother. Who is Bonnie's mother?
Am I missing something here. It seems too obvious. The first sentence says that Bonnie was given the painting by Betty and the last sentence says she was given it by her mother, so Betty must be her mother.
I'm sure it will turn out more complicated than this.