Can you reason with her?
I just lifted the following from the National Sleep Foundation.
Sleep is vital to your well-being, as important as the air you breathe, the water you drink and the food you eat. It can even help you to eat better and manage the stress of being a teen.
Biological sleep patterns shift toward later times for both sleeping and waking during adolescence - meaning it is natural to not be able to fall asleep before 11:00 pm.
Teens need about 9 1/4 hours of sleep each night to function best (for some, 8 1/2 hours is enough). Most teens do not get enough sleep — one study found that only 15% reported sleeping 8 1/2 hours on school nights.
Teens tend to have irregular sleep patterns across the week — they typically stay up late and sleep in late on the weekends, which can affect their biological clocks and hurt the quality of their sleep.
Many teens suffer from treatable sleep disorders, such as narcolepsy, insomnia, restless legs syndrome or sleep apnea.
CONSEQUENCES of insufficient sleep:
Limit your ability to learn, listen, concentrate and solve problems.
Make you more prone to pimples.
Lead to aggressive or inappropriate behaviour.
Cause you to gain weight.
Contribute to illness.
SOLUTIONS:
Make sleep a priority.
Naps can help pick you up and make you work more efficiently, if you plan them right. Naps that are too long or too close to bedtime can interfere with your regular sleep.
Make your room a sleep haven. Keep it cool, quiet and dark. If you need to, get eyeshades or blackout curtains. Let in bright light in the morning to signal your body to wake up.
No pills, vitamins or drinks can replace good sleep. Consuming caffeine close to bedtime can hurt your sleep, so avoid coffee, tea, soda/pop and chocolate late in the day so you can get to sleep at night. Nicotine and alcohol will also interfere with your sleep.
When you are sleep deprived, you may be as impaired as drunk driver.
Establish a bed and wake-time and stick to it, coming as close as you can on the weekends. A consistent sleep schedule will help you feel less tired since it allows your body to get in sync with its natural patterns. You will find that it’s easier to fall asleep at bedtime with this type of routine.
Don’t eat, drink, or exercise within a few hours of your bedtime. Don’t leave your homework for the last minute. Try to avoid the TV, computer and telephone in the hour before you go to bed. If you do the same things every night before you go to sleep, you teach your body the signals that it’s time for bed. Try taking a bath or shower (this will leave you extra time in the morning), or reading a book.
Most teens experience changes in their sleep schedules. Their internal body clocks can cause them to fall asleep and wake up later. You can’t change this, but you can participate in interactive activities and classes to help counteract your sleepiness. Make sure your activities at night are calming to counteract your already heightened alertness.