Betsy Giordano is a pre-made childSim who is featured in promotional material for The Sims 4: Dine Out. She can be downloaded from the Gallery along with her family.
At the start of the game, she is in grade school and has no skills. She and her brother Paxton may be twins, as they are both in the child phase. It is possible that the developers switched Paxton and Betsy's aspirations, because Paxton has the bookworm trait, but has the Artistic Prodigy aspiration and Betsy has the creative trait, but has the Whiz Kid aspiration.