Interested in hearing others input! I have one I think will be a wreck once I start hauling her. I did get a pony...kind of for her...also because it needed a better home...just not sure I want to start that habit if it isnt already a mess to begin with....

You need to make her being near her buddies much harder work than being away from them.  Whenever she starts acting buddy sour, make her work hard.  Circles, direction changing, roll backs, whatever you have to do to get the point across and get a heavy breath going.  Move her away from her buddies and let her rest and reward her.  Repeat.