So the ones who didn't balk, you fed with no problem but the one who said, "i don't wanna" you just let her make that decision? That is lack of leadership, guidance, and motivation. You and the dog had a disagreement and the dog won.
Thats and excuse, not a reason not to feed an appropriate diet. Others can do it and so can you. You are not a dog novice.
They are picky and finicky because they are allowed to be. Their owners think they are fragile little toys and are afraid they will damage them if they hurt their feelings.
This is just smoke and mirrors. It has nothing to do with the problem. It's another excuse not to upset the little doggie.
I'm glad to see she is making progress but you seem to have surrendered on the terms of eating bone-in meat. It is still possible. You HAVE given up too easily. You don't give up until the dog is eating properly.
Then it's a matter of motivation.
True and thats the reason not to surrender to the will of a tiny little doggie. This is where leadership comes in. If the dog sees you as a leader, she will be much more likely to do as you wish.
Good luck, and please don't give up. You can win this. You are the human. You are supposed to be smarter.
Dogs are easy to outsmart.