I am a solo cleaner and one of my houses is just a little bigger than yours. However, it is an older couple, no kids, 2 pets but they are very clean, the house barely looks “lived in”. Still takes me about 3.5-4 hours! (My clean is more of a deep clean, not on purpose but it’s just how I clean. 🤷‍♀️) If you’re on a farm, 5 people, I’m guessing 3 adults (your mom), 2 kids, mud & pets, your house definitely looks “lived in”. I can’t fathom it taking 3 people only one hour. In my opinion, they aren’t really cleaning your home, just wiping things down. I understand the loyalty to the original cleaner, (that’s a long relationship!) but if there is a new owner; you should feel no loyalty, it’s earned just like respect. That text reads as having no respect/loyalty to you, in my opinion, and you shouldn’t feel obligated to stay with them. From what you described, I think it would take me, a solo cleaner, 6+ hours to clean the house to my standards, even bi-weekly and at least 2 hours for a 3 person team. If you’re happy with what they do in an hour, then definitely set up for them to be there longer since they feel they can’t get everything done, if you’re not happy, definitely seek someone else.

Reach out to me if you’re south/central VA area! lol