Who to choose and what to do?

It's a really long story, I'll try shorten it.

My appaloosa, he tought me so much and I loved him and trusted him more than anything, but, one day he was sold and I got no chance to say goodbye. I thought I'd never find him...

Jess - When he was sold I started riding Jess a beautiful arab, everything was going well until she had a terrible fall in canter which has left her very lame. She seems to be getting better now I've had the vet and the blacksmith see her. I love her un real amounts.

Ruby - When Ruby showed up at the stables where I help out, she had long dreadlocks and shaggy fur, she hadn't been touched for years. When you went to her door she would put her ears back and run away. I was asked to ride her, and when I did, I loved every moment. Although, she clearly hadn't been broken in properly. Just when things were getting better, she was taken back by the people who'd previously owned her. Ruby had turned up with no name and was a piebald cob.

Scarlett- Scarlett came from the same place as Ruby and has the same attitude. She also wasn't groomed and had a poorly cut, hogged mane. She was also a piebald cob like Ruby and also came with no name... VERY underschooled, bucked a lot, rears ocassionally and bites often. Now though, she has come on a lot with her schooling, though I've only been riding her about 2 months.

BUT, I have finally found out where the appaloosa is..

I can go find him, which would mean giving up Jess, Ruby and Scarlett for ever. But, gaining happyness and helping the little star who helped me. I have been told he's been sold to someone who helps braindamaged people to ride, however, I have also been told by a different person that this is the same place Ruby and Scarlett came from. I also know he isn't being ridden. If I went there, I could help Ruby and appaloosa(Uggs), but, then Jessy would be sold to her old cruel owners, and Scarlett sold on to the people who want to buy her. It's all very confusing....

What's more.. If I saw Uggs, I would see him once and once only, if he's happy, all I get to do is say goodbye, if he's not, I can help him. I want to see him more than anything in the world, I've been trying to find him for 8 months and ever just to know he's safe would mean the world to me...