I think the blue fairy has a very rigid view of right and wrong and doesn’t allow emotions to cloud her judgement. The fairies are not humans and emotions are so very human. Blue fairy has been stated to be on the side of good yet her actions come across making people think otherwise. Nobody doubts Snow, Charming, the dwarves or Red for being on the side of good so why Blue Fairy?
Grumpy and Nova- Blue Fairy was dead set against those two being together. Why? Because love is such a human emotion. Love, or the loss of it, stops people from acting rationally and logically and start acting on emotions. It was Rumple’s love of Bae that led him to create the dark curse in order to be reunited with his son. It was Regina’s loss of Daniel that began her on the path to becoming the Evil Queen. Love can be a destructive force.
The ends justifies the means- Blue Fairy believes she’s working for the greater good. If sacrificing Henry meant the rest of fairytale land’s inhabitants were forever safe, would Blue do it? I think she would. She’d probably look for alternative methods first but if it came down to it, she would sacrifice Henry for the greater good. Snow, Charming and Emma wouldn’t because they are blinded by love. Love has no place in fairies’ lives. The “Bad” fairies could be fairies that have been affected by love hence why they went bad. What if Nova was the bad fairy Snow got the fairydust from?
All magic comes with a price!
Keeper of Felix