She needs to be gentled first, you could do join up on the back of another horse but not from the ground yet.

is there a lesson on how to do it on the back of another horse? We have caught her and put a halter on and lead her with another horse, tied to her and she walked willingly. but she is still very scared of us.

Sorry another question, how would i gentle her the Monty roberts way?

There's not a lesson on the Uni about how to do join up on the back of another horse but Monty has a video called "You and your wild horse", where he starts a wild mustang and shows exactly how to do everything you need to know to gentle your horse. I got this video at my local library, if they don't have it you can ask them to order it for you. He actually has eight different videos that are really wonderful and cover everything that isn't covered here on the Uni. There is also a partial video on youtube about gentling a young horse taken from one of his video's that would probably be very helpful to you.
Hope this helps,
Kleinne

I should have added this video on youtube in called, "Monty Roberts gentling your spooky horse".

Thank you for the advice, I am in South Africa and cant seem to get the video or his handbook forsale anywhere, is there a person here whom we can contact?

I'm not sure if there's someone in South Africa, you could contact support and ask them, also here on the Uni somewhere is all the names and info for Monty's instructors. Since you can't get his video's let me just explain a few of the things in them that might help you. Since you were able to put a halter and a lead on her I would spend some time just touching her and move away, touch her on her forehead and move away when she becomes comfortable with you touching her head move to her shoulder and do the same thing or you might start with her shoulder instead. You only need to just touch with the back of your fingers and move away for a second she will begin to relax and start to offer that spot to you, it's called the sweet spot. If possible keep your eyes averted from hers and move very slowly, do this until you can touch her all over her body and pick up her feet. Be careful around her legs as to not be kicked. You can use a fake arm with a glove on it if need be to touch her back legs to make it safer for you. Remember that horses learn on the release not the pressure. It shouldn't take to long to gentle her enough to start join up but every horse is different. If you don't have a dually I would highly recommend that you get one, also you can use a buddy horse to help ease her anxiety during this process if need be as long as she's not trying to hide behind the other horse but sometimes seeing the other horse except the human contact can be reassuring to her. If you want to use this method I would consider a shoot system with the buddy horse in front and the filly behind. Both horses need to be walked through the shoot several times so they are comfortable with the shoot and then the front and behind are closed off so you can work with your horse and they can't run away. I don't know if it's necessary to go to all that trouble but it's up to you.
Good luck and let us know how it goes,
Kleinne

Hi,
The wild horse first needs to get used to you.
just go to her feild or stable everyday and just stand there will a non-aggressive stance and just let her get used to you, it will take a while but eventully she will start to accept you more and more until you can do join up with her :) Good luck, I'm sure that you will build a partnership that lasts :)
Thanks, Abi

Dear sanetsmal
The horse is very young. If you have managed to put a halter and a lead that seems enough to me. I would leave her now on the pasture with other horses for another year, visiting her twice a week: touch her, gradually putting the halter, eventually taking the feet. The most important rule: you must always go away before the horse does.
Rudi