try Benjamin Moore Key Ivory West for the walls - it's a soft color and will brighten the space, but will work with other colors. Put a funky rug on the floor. Go to Marshalls or TJ Maxx or IKEA and get a comfy chair with a a small table next to it. If she has any artist friends at school, have her ask them to do an oil or watercolor of something she likes in a large canvas for over the bed (don't frame it). Replace those lights. Or, for over the bed, just print out a bunch of 5x7 photos of friends or whatever (black and white would make a statement) and arrange them in whatever frames you like. Going for neutral or soft colors will enable you to use accessories for color and change the look when it gets old.

It's refreshing to see nautical, navy BLUE. Everyone is saying the same thing for the most part - just introduce another color, definitely bright (yellow or orange IMO) and it will make it more current. What I really like is how your style will withstand the test of time - and with minor updates now and then it will always look fresh and "current".

This is an eclectic space but the bedding looks like a good fit for an art deco space -

Okay, so I like it simple and modern, big stripes, big blocks, love this and this I really like uncluttered look. like this to https://www.houzz.com/photos/murphy-beds-modern-rendering-phvw-vp~24435627 , and I like my dark grey's and browns not to mention light blues, yellows, oranges and reds clashy aye.(not sure if these colors will work with the wood, really like the idea of staining the wood darker to more like this https://www.houzz.com/photos/rubin-residence-contemporary-bedroom-san-francisco-phvw-vp~5202610). But really interested in your ideas.