First you must correctly identify the cause of the problem so you don't treat the symtom.
What type of pressure tank does she have; air over water galvanzed or precharged captive air bladder? If galvanized, and it has an air volume control, that could be bad adding more air to the tank than it is supposed to which then escapes the tank into the water lines to the house. That will continue until the valve is replaced.
If a bladder type, then more likely is the well was drawn down too far and the pump sucked air but... after an hour or so, the water level in the well would have recovered and there should be no more air in the water problem as soon as she flushed the air out of the lines. If they used a lot of water to rinse/wash/rinse the deck, and pulled the water level down to the pump inlet, then possibly there isn't as much water in the well now as there was before the well may not be recovering as it did before), or something could be wrong in the well. Like a two line deep well jet pump leaking suction line (sucks air).