Dreams, Nightmares, & Reality

What are Dreams? What are Nightmares? And what's the difference from Realities?
Angel Prairr is an exceptionally ordinary girl in her small hometown of Washougal, WA. A place where nothing changes and everything is everyone's business. Her life is same as can be until she meets a boy who is destined to do something extraordinary. And so, their journey begins:

My eyes narrow as I try to see them clearly. Uh oh. They look like they’re fighting.

“Mom, look! Someone’s getting hurt!” I urge her. I turn back to point at the field and I see only one person in the field stumbling. Where’d the other person go? They had just disappeared.

“Angel, I don’t see anything. Now, as I was saying...” she continues.

The car begins to round a corner as I turn my attention back to the meteor when I realize too late.

Like a target, the meteor hits the remaining person spot on.