Deep Relaxation would have multiple uses for sleep and letting go of some of the frustration.
With the teenager issue... "frustration" points out there is nothing in your control about the situation.That means you there is nothing you can do right now so you have to find a way to let go for your own sake. Anxiety Free may be necessary. Since there is nothing you can do overcoming the anxiety that leads to frustration may be in order.
Use Deep Relaxation before sleep.
Alex