This is really awesome! I don't think the girls expression fits though. I feel like it should be more of an intimate reaction where she is looking up at the demon's eyes or at her hand about to touch his. Her looking at the camera with a blank expression and her eyebrows raised slightly gives it a feel as if she doesn't really care about the demon. But the photomanipulation of the demon into the picture is fabulous.
I think that's to go with the imaginary/invisible theme of the series. Who knows if any of the monsters are even there or not? She feels them (as it seems, most of the time at least), but even to her they are unclear or invisible. Are they even tangible? Sometimes she is almost able to feel them (she is even cradling one in part 4), but other times, they are touching her and she seems completely unawares - or she is not acknowledging them (especially visible in part 1).
I think that, rather than asking what could be changed to fit the message an observer of art imagines, one should instead imagine the message(s) that the artist might have tried to create themselves. The girl [i]isn't[/i] looking at the creature - what does that mean? There is definitely a sense of intimacy here, but it seems to fall short of love, in my opinion. Maybe you're right - she doesn't really care. And then there's the question of why the monster itself is even there to begin with...
not my art, but yeah, your right, they are different...hmmm. I like the idea of them being invisible to everyone but her more, even if the looks a little off, I think the whole situation should look a bit surreal and off. But thats just my opinion.