Possible Clues:

• Wake up too late
• Out at night, more so than usual- it's what she might do awaiting the handsome prince
• Use the top bunk to doze longer in bed?
• Be out longer than intended having finished taking skins up
• Out at night, more so than usual - it's what she does not having met handsome prince yet
• One may do this after an alarming breakdown
• Come round too late?
• Miss one's alarm
• Take too much time out?
• Fail to come to?