Mia
Yes, my child, meditation can help with nightmares, if you allow it to. Your subconscious must be willing to let go of the problems themselves in order for your episodes to stop. You have had so many events to deal with, they can pile up if you do not work through them properly.
Mediation will most definitely help.
You must relax, my dear. I know Jamie will soon be fine. You can allow yourself to let go of some of your tensions, and just be Mia. You do not have to be a superhero. You simply have to be you.