Payback with a Dumbphone

Jessica is the daughter of the richest family in the province. At university she keeps that quiet and lives like any other student. Her roommate Fiona finds out. Jessica goes abroad on holiday with her roommates. Fiona puts a virus on Jessica's phone, gets at her bank card through it, and pays the group's expenses with Jessica's money. Jessica goes to Fiona to ask about it and is pushed off a roof. Jessica wakes up at a point before the trip with the memory of what happened. She makes a plan ahead of time. Fiona goes after her anyway. Jessica has swapped her smartphone for a basic handset made for old people, and the attempt to drain her card through it fails. On the trip Fiona has been using Jessica's name and Jessica's card as her own. A dispute breaks out over a bill Fiona cannot pay.