Lord my 19 year old daughter got in the shower yesterday morning before I did. 55 gallons of hot water later I attempted to shower and got nothing but cold water. I wish she would get a wild water conservation hair!
ps I did have an 80 gallon tank for a family of five and it crapped out in December. I found out quickly that Obumbler and his band of fascist decided that was too big for a family of five we only needed a max 55 gallon tank to save water and energy. A new 80 gallon tank was around $1200, just for the tank, ouch!
That sounds like the Millennials I know.
They find bar soap unsanitary and disgusting, but have two dozen fancy lotions and potions in the bath to help them get through their showers.
Give them 5 minutes, then kill the hit water.
I bet shower times will decrease.
But...she is just helping you do preventative maintenance by flushing the heater ;-)