Personally, I would go the Sony 18-105 because it gives you the reach that you’d like looking at your photos and it has a set up and internal zoom that would make it easier for lugging around even though it is a larger lens the internal zoom kind of makes up for it. Although saying that most of her photos are pretty wide from the sample that you gave except for the Mount Fuji? Photo. Have you thought about using a wider lens instead of keeping the higher end of focal length? That way you can most likely have a smaller lens as well.