@Stevey
Nothing you can do.
You can't change their lifelong habits.
If you must stay there, I suggest you partition off a small plot of the yard, build a 1-meter concrete wall, and install a DIY container tinyhome.
You can live in the container home and maintain civilized standards within your compound. Honeybunny can visit as needed, and can keep her flophouse the way she likes it.
Everybody's happy.