Doggy Training

Twilight stood at the podium presiding over Rainbow Dash's claim of unfair trade between her and the daring do collector, Teddie Safari. Twilight said "I've heard what you both have to say and I'm sorry Rainbow Dash but my hooves are tied, you said it was a fair trade"

Rainbow Dash went "Yea, I said it but I was wrong! I did want that book a lot, I said I wanted it more than anything in all of Equestria, but there's no thing that's worth as much to me as a friend. I might have forgotten that for a little bit but it's true, which means there's no way this trade can be fair!"

There was a brief pause before Teddie Safari spoke up and said "Oh come on! That's bullshit! You said it was a fair trade missy! You got the book, I got the orthros and you agreed that your friend can come back to Manehattan with me to help train it, I don't for a second intend to go back on that trade!"

Rainbow, bewildered, simply panicked and went "Come on Twilight! Back me up here!"

Twilight sighed and said "Well... as the princess of friendship I agree with your side of the argument... however, as a judge of whether or not a trade is fair... I can't be biased and if Teddie Safari refuses to go back on a trade that, at the time of the trade, was agreed to be a fair one... there's nothing I can do. I'm sorry"

With business concluded, Rainbow Dash walked away feeling sad that she had basically sold her friend for who-knows-how-many-moons just for a book, Twilight walked away feeling bad that she couldn't stick up for Rainbow Dash according to the rules of the trade and Fluttershy walked away ready to spend a long time helping Teddie Safari train her new pet orthros.