This picture suffers, unfortunately, from design problems that can't be fixed. Ok, maybe in Photoshop, but that's not an option for me.
The partial body on the right leads the viewer's eyes out of the picture. And a partial human being disrupts the visual comfort zone. Part of anything has to be a deliberate choice; the human eye yearns to complete the form! But it is impossible to crop out the mother without losing part of the daughter, too. And that just won't do.
The little girl's head gets lost against the background of trees beyond the wall, and that's a problem too. If only I'd caught her a few steps away from her mother, and one step down! A little girl joyfully hopping down the steps - the focal point of the composition without the distraction of the trees, the sky, and the mother. Eliminating the distractions and keeping her close to the middle of the picture would be a great statement on centering and bliss. The picture had potential, but the opportunity was lost. There's something to be said for recognizing that and moving on.