This'd make for a fun family afternoon.
Role-Play.
Create a 'mystery' for "Steph" to solve. Each part of the family play a role - make it like "Clue"? Have somebody steal a popcicle and the others in the family are suspects with only Abbie as the P.I. and you as here faithful sidekick. Work in clues (popcicle drips on the floor - discarded stick, dirty handprints, etc).
