This is really beautiful, both in execution and in concept. I imagine this being the spirit of one of the girl's loved ones, perhaps a grandparent, who has recently passed on. While the girl is in mourning, the spirit comes to her and comforts her, assuring her that they will always be with her and will always be watching over her. Magical.
I love this. Even though the spirit looks like it would be menacing or evil, it isn't. I don't see it being malevolent at all towards the girl. Both seem calm and there's a content or calm feel towards this picture. Good work. You deserved that DD!