When Spencer shows Aria, Hanna, and Emily the bundle of cell phones "A" left in Spencer's parents' lake house, she mentions an address in Philadelphia called Hyperion Street, but on the receipt she shows Hanna, it reads "Hyperion Blvd".
Hanna complains that she's going to be home alone, then a minute later when both Emily and Aria offer to cancel their plans, Hanna says her mom will be home before Emily and Maya leave. If her mom will be home before they leave, Hanna does not have to worry about being home alone.