Hi lor, my advice as promised lol..
I actually think it's a very good shot ! It's reasonably sharp.
The only things i would say is it's a little bright, if mum had a program installed which had the brightness/ contrast level, you could adjust the levels up and down to see the benefit, have a word with her!
And also, get a peice of paper and put it up to both sides, top and bottom, and see what the image would look like cropped, (without the background) and see what you think!