It's a nice photo of her, I would think about how you're framing the subject. There's a good bit of space in the photo above and to the sides.
Think about everything you see in your viewfinder and if you want it all in the picture. If you want the case to the left in the picture, frame your shot so the viewers can see enough of it to see what it is. In the lower right there's part of something that doesn't need to be in the picture at all.
Having the background more out of focus can work but if there are a lot of objects there, especially cropped off, it can still make for distracting blobs of color and shape that don't add to the composition. Move around when you're getting ready to take a picture and notice what's in your frame and how taking a step or two can change what you see in your viewfinder.
The nice thing about there being a good bit of color and shape in the background is you might think about where she could stand to use that to enhance the subject. The image of her is nice and sharp and she's smiling and responding well to you as the photographer.
