Interesting idea but too much empty space on the right

Apart of rule of thirds it should be a balance in the image. Here the view is mostly deviated from your subject by the said 'empty space'... You could have this in the so called minimalism when the subject is so small and the empty space does not disturb the subject.

You are totally right. Rules are there to be broken, to our great satisfaction as long as we are not penalised...

However, if I look at your picture I see two! One on the left with a lot of action... full of story telling. And another one on the right side where nothing happens... No story, nothing... Could this be interesting??? To you? What if you change your point of view and try to see it through some other's eyes... Does it stand up???

In photography when you come to broke the rules the only penalty you get is to be not recognized. It hurts, but you learn to what extent the rules are breakable...

If I focused only on the lady I think this photo wouldnt be so strong!

I feel less would have been more with this shot. I am not bothered by the negative space for it defines the grandmother or the other half of the image. However, the plantar the green wooden gate,detract, so when I say less is more had they been out , to me the image would have appeared stronger and less cluttered, negative space nothwithstanding.