I believe the Blue Fairy is the master puppeteer in this whole story. She IS the Reul Ghorm, the “Blue Star”, The great evil that even the dark one fears, the one who possibly controlled hoặc instigated the Ogre Wars, the one who manipulated and set up everything so that Rumple is called to help Belle’s kingdom, who obviously had a history with Cora (ie why Cora used Blue’s body to trick snow); Who lied about being able to lie, who made is so that Snow would have her horrible ending, who set everything up so that she would come out on top. Through all this, The Blue Fairy has only strengthened BELIEF. If that is what helps nàng tiên keep their magic, then belief in true love, in great evils, in overcoming hardships, in NEEDING nàng tiên TO OBTAIN THEIR HAPPY ENDINGS, will bring about thêm power. If that is all true, then the Blue Fairy is doing one helluva job orchestrating everything to make that happen. She also rarely steps in to stop anything unless asked. She merely plays behind the scenes, and watches it unfold, then steps in to be the ‘hero’, who helps out those ‘brave’ enough to ask (August's condition)