You need to play her game in a way that SHE understands.
Yes, treats are "nice" but thats not how a horses langage works.
You need to show her that when you catch her it doesnt always mean comming in for "work" and you need to earn her trust.
How to do this?
1. You need to put her in a smaller environment. She shouldnt be in a large pasture with other horses to influence her.
2. Once she is in thar smaller area (ideally an individual paddock/round pen) THEN you start working with her. Always carry along a halter and lead but for the first while dont bother to use it. Just bring it. You dont want her to associate being "caught" with the halter and lead. Just have it around always, for her to see and not make any assumptions over. After the first few days - start walking up, hand feeding and walking away. Go pet her, talk to her and walk away. IF she walks away - turn your back to her and begin to walk away. You want to teach her that youre not out to "get" her in predatory terms. Youre simply there for her affection and attention. You will notice that once you release the "pressure" (walking away from her) when she runs that she will soon come to be VERY curious and begin to come toward you.
3. Patience. This is NOT going to happen over night. You need patience. A horse flees being caught mostly out of dis-trust OR because they are sour at a routine. Everytime you go to catch her make the goal different. Even if its to catch and and release her 5 times, this is GOOD. Then she sees that youre only going to catch her and let her go. This should humor you because it really will confuse her in a good way and help her to realize that "this isnt so bad!" and she will soon be more than content with you catching her.
4. Consistency. This is not a 2X a week thing. This is a 7 day a week program. Usually they come around quickly and they pick up on the lesson very fast. But some it takes longer than others and you need to be consistent but at the same time, adding variety so it keeps her thinking and on her toes.
5. If the situation where she is isnt working, move her. Its in your best interest and most importantly your horses that you make her surrounding situation suitable to what you expect of her.
I sure hope this helps
If you need anything or would like more assistence - let me know and feel free to email me. The hard to catch horse is my specialty and truly my favorite lesson of all! :)
Sincerely,
Dallas
EDIT**
Stop giving her grain and feed. What youre doing is rewarding her with this. Let me guess - you catch her, give her grain and then go to catch her the next day and you STILL cant catch her right? Grain and "yummy treats" do NOT motivate a horse. Horses by nature are not necessarily diciplined by food motivation. They are a social animal and they are a herd animal. They flee and "dont like to be caught" because there is a distrust there and because when they figure out how to take advantage of something - they will. Just like she is now. You catch her (when its on her time) and then you give her grain and "reward" her and then turn her out. Bad Bad Bad. Eliminate the grain and start working with this horses issue - and that is her sourness to routine and her unwillingness for you to catch her.
Regardless of the sympathy you and I have for this issue - it still NEEDS to be a lesson. So its up to you to make it a lesson.
I highly suggest getting a professional in who is experienced in dealing with a horse who isnt easy to catch and working with them. OR reading up on the problem and trying some different things. Regardless of what route you take though - you need to remember that EVERY time you work with a horse and EVERY minute to spend with them, YOU are teaching them and training them. So its important to be very cautious in how we do things and its important to remember that they dont understand as we imagine they do. You need to learn how to communicate with your horse in a way that she understands.
It will be a learning experience - but once you get there, its the best feeling in the world.
Good Luck=)
EDIT****
Thanks Anonymous!!!! :)