Those conditions sound absolutely horrible!!
It actually brought tears to my eyes to read that! There has to be something you can do. 50 dogs??? Poor things. Talk to as many people as you can about it. Ask the police dept about # of dog laws, talk to good shelters and stuff. Even if you have to call a bigger city.
Prissy is such a cute name. It was the name of my grandma's maltese that I grew up with.