Sounds to me like she is watching Netflix for 3 hours a day :)
I first read through the list and thought it sounds a lot but in reality it really isn't!
I spent 6/8 hours this weekend doing a good clean - I do go hell for leather and get a good work out mind you.
But... I live in a 3 bed, 3 bath townhouse all the bathrooms have been used this week and my Sewing room/office was a tip
In brief I tidied up everything, changed, washed, ironed and put fresh sheets on two beds. I steam cleaned three bathrooms, and the downstairs loo. Hoovered everywhere and dusted/wiped down skirting boards/banisters polished, scrubbed tiles (I'm very particularly and use a toothbrush on my shower drains and sink plugholes) steam cleaned the bathrooms, vax-ed my carpets, hoovered sofas, blinds and anything else in range :) cleaned up cat boxes and their room (mucky pups) and deep cleaned my kitchen, sorted out cupboards, cleaned my fridge (oven was not too bad so just gave it a spritz) and loads of other stuff to make it smell lovely and clean :)
Steam cleaned my wooden floors and tiles in kitchen/bathroom
The cleaner is definetly watching Netflix...
If you ever watch that C4 programme obsessive cleaners your house should like the show homes on there as they spend about 25-30 hours a week cleaning!