get them inot the smaller enclosure, by bribery if needed.
learn how to walk down your horse (there is TONS of stuff written about it here)
get good at this before you let them out in to the big pasture.
and read up more on horses, because your approach to them is not accurate for a human to horse relationship. What I mean is that you are approaching her as if she were one of your girlfriends who was giving you the cold shoulder 'caseu she was miffed at you for something, but wouldn't tell you what it was, and you had been trying to be so nice to win her back.
throw all that away.
Your horse wants to be left alone to eat and rest. That is her foundation. pretty much all horses want this. They enjoy the company of other horses, and humans, if they feel that they are safer in their company. They feel safer if they have an obvious place in the group, and an obvious leader. An obvious leader is one that can move them around, even if they pin their ears and resist. if another horse tries to move them, some horse they don't know, they will usually resist, until it becomes apparent that the new horse will not give in and does not care about their attitude of resistance.
you need to move your horse around, and not care about her resistance. once she realizes that you are capable of this, she will stop having this resistant attitude, unless you begin "begging" her to like you.
This is the beginning of a journey of learning for you. Keep reading here, and other places, and see if you don't see yourself in the threads of countless other young owners , who are frustrated that their horse does not "like" them, and are begging their hrose to love them and having all kinds of attitude problems as a result.