Page 35 - Ye Shall Receive

A suitably tenacious player can get whatever they desire. As a DM, you can’t really put a stop to this without ruining the fun of the game, but you can make the player regret the consequences.

Spike: “My dearest, most faithful student, Twilight. I gave you a task to make some friends. That was no idle advice. No single pony can make things right, not even me. In order for you to pull through, you will need help. If you do not have friends helping you – or worse, your friends are neither faithful nor strong – hope is lost to you. Make some friends, Twilight Sparkle. That’s all you can do to prepare. Signed, Princess Celestia.”
Twilight Sparkle: …Th-That doesn’t answer ANY of my questions!