Alright, I'll answer a few questions you guys asked, just 'cause I basically beat the game too. I haven't beat Pippa yet, but I'm working on it. *curses Pippa*
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Ok, the sheep herding thing isn't as hard as everyone is making it out to be. It takes time, but it's not hard if you have patience. Basically all you have to do is position yourself behind the sheep in the direction you want it to go. If you want to make it head toward the fenced-in place, then when you push the sheep make sure the fenced-in place is in front of you. No matter what direction the sheep is facing when you first give it a nudge, it will turn around and walk in the direction you pushed it.
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To find the number for the code outside of Blacklock's house, you have to go and talk to Molly, who will tell you to look in the phone book in town. If you can't follow the directions she gives you, then look on the map that Rose gave you at the beginning of the game. The code to his house is the only numbers than you can read on the paper when you observe it.
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About the ATV, all you have to do is follow behind him at a canter, then when you see an area where you can dart ahead of him, do it! I remember the first time I played it this part was hard (mostly because my horse stunk) but this last time I played it was really easy. There's no set way to do it, just make sure the guy doesn't get to Blacklock's place. Also you gotta make sure to catch him twice, not only once.
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When Davy says "Come along, into the saddle" at the end it doesn't mean anything. He's just telling her to get a move on and start training her horses. lol.
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When you lose the horses, make sure that when you first enter the area by the river that you look to your right immediately upon entering, as there is a horse over there. I almost missed it the first time, but luckily I thought to look that way.
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With the colors for the code inside of Blacklock's house, you'll find the code to them on the piano's music stand. I believe it's something like RRBGBY (or maybe RRGBGY). R stands for red, G stands for green, etc.
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When you're trying to find Rose, basically just wander around the area at a trot until you see her. She's not on a path, so you'll have to go off-road. Eventually you should find her, so just make sure to look around every tree and rock.
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Ok, to do an extended canter or a collected canter, you have to be galloping, not cantering. Obviously you also have to be holding down the right buttons (as in, when you do a collected trot you have to HOLD the C key, not just press it). Also, right shoulder in and left shoulder in can only be done at a trot, nothing else.
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To do the part with the keys in the well, just open your inventory when you're standing next to Rose and 'use' the rope on her first. She'll say something (I think). Then 'use' the magnet on her and you'll have the keys.
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To find Blacklock's house, follow the bright blue sign with the white tree.
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I hope I helped you guys, and if you have any more questions just ask. ^__^
~ luckypup078