Just a head's up. That busted hose is screaming at you with a very important warning. Go around her house and replace every water hose in her house with the steel braided kind. Even those get risky after 5 - 10 years. Get new. Toilets, sinks, wash machines, water heaters, refrigerator water dispensers, dishwashers, etc.... Biggest home insurance claim...busted water supply hoses. Probably $100 bucks or so to do the house and worth every penny.
I go 3% total (half FW and half FA). Go from there. 3% might even be too high.
Agree 100% I don't vape crap. Down the drain it goes.