Wait a minute!
Shes 15 you say. She PAINTED her room cos she was bored???She came up with an artwork design for it????? (it doesnt sound like a grafitti wall). She has made a revision timetable WITHOUT PROMPTING and put it somewhere she cannot lose it ??????
Where on earth do you buy one of them!
If my two showed that much initiative and ownership of their own life by the time they are 15, I am going to be over the moon!