Hey there, yes it does make sense. The problem however is perspective. Even though the waists of the girls look even, the girl on the right looks taller. And yet you have her placed behind the girl on the left. This feels awkward because generally speaking, in a 2D image larger objects are perceived as being closer unless there is a frame of refrence for locaton AND size. Here, you have no such reference and the shot feels awkward. It looks like a taller girl who is standing right beside the shorter girl and yet is blurred. To fix this, maked the blurred figure appear smaller and therefore, further away. It should make the image feel better.
Then again there is the possibility that my car shopping is damaging more brain cells than initially anticipated and I could be way off base. But I've said what I've said and I'm pushing the continue button and moving on to food.