A dated headboard will definitely detract from your project, so this must be addressed at the outset. Luckily, there are many inexpensive and creative ways to rectify this issue. The headboard in our photo is luxurious and obviously covered with fabric to match the decor. You may not have enough time or enough funds to purchase an item like this or to have the current headboard professionally reupholstered. You can, however, recover an existing headboard (or simple plywood panels) to create a fresh, new look. Purchase additional curtain panels or flat sheets when buying new bedding. You can use this co-ordinating fabric to re-cover an existing headboard.
Co-ordinating the look by purchasing matching bedding fabric is an easy fix. Purchase new foam padding and batting in order to create a soft finish. Cover the headboard with the foam, then batting and then the fabric. If there is no headboard, then create one using plywood panels that can be upholstered and will simply sit on the floor between the head of the bed and the wall. I did this in our bedroom and it turned out quite well. A good hot-glue gun was all it took. Depending upon the type of headboard mom has, you might be able to paint it or even wallpaper it. Keep your options open.
The feature bedroom boasts a lovely focal wall of botanicals in co-ordinating colours.