FYI - the magnetic paint does not work. The best thing to do to create a large bulletin board for her by purchasing inexpensive cork squares at Home Depot or Lowes and adhering them to the wall. Then frame it with some simple molding. You can also put the cork squares in a line along the wall or in any shape (like her initial and they can be painted, too.

Something you could do is paint the wall with chalkboard paint. You could do a whole wall, or part of a wall and it comes in many different colors. You can even make your own! Removable decals and photos are also great to put on the wall.

Consider painting a wide stripe (12 inches or so around the room. Paint magnetic paint first and then go over it with any accent color she likes. Then she can use magnets and put up pictures, cards, ticket stubs, magazine pages, or anything she likes. It will be a constantly changing bulletin board that does no damage to the walls.You could also just paint a large magnetic square on one wall if she likes that better.

Maybe enlarge some photos of her and some friends in black and white, glue them to foam board and hang on the wall. I have seen on Pinterest where Staples and Office Depot will do engineer prints for around $5, and the foam board doesn't cost that much either. Just a thought...