She was intended for a contest, but details of that got foiled in various ways, various times and... well, she's been sitting, waiting for her chance. The other day I walked in the room and noticed her and thought, "No. She needs the world to see her now. And maybe someone will really want to cherish her in the way she deserves."
I'm proud of her, besides. I always did love Maleficent, and despite how I have completely taken it upon myself to forget what a horrible experience her boss fight in Kingdom Hearts was, it was also one of those fun "two worlds meeting" things. Hence, awesome shininess!