I would look at doing something like a superchunk style corner trap that used a nice stained wood top plate and allow her to choose from fabric options to match her tastes. Then let her put a picture frame, vase, nick-nacks, or whatever she wants on top.
The less DIY approach is to buy something like a GIK corner trap and then mount a basic corner shelf right above it for her to use for decorations. GIK offers a few fabric choices to pick from too. Some other places offer a full selection of GOM fabrics.