Goodness only knows what “inverter wires” are. It sounds as though your daughter has somehow managed to completely wipe out her installation of Windows.
Try Sainsburys or Waitrose or M & S – they are bound to have puff pastry. Tesco Asda & Morrisons etc are unlikely to have much of it left – assuming they had much in to start with.
….. and if you popped down to your nearest Iceland, you could buy a ready made frozen Christmas / Easter dinner and be ready in time for a seriously Chavtastic meal with all the trimmings.