I find uncertainty always means anxiety, and since this process is completely uncertain till the end, there’s a ton of anxiety!
But not only will you survive, I expect you’ll have a happy ending. But definitely, be prepared for bleak days as well as tremendous highs.
I also wouldn’t ask where your runner is yet. Clearly they are a top recruit if being offered prereads at this stage. I don’t know how many prereads track and field gets; the Middlebury soccer coach told parents that he has 50 preread spots. So you already know your child has passed this first potential winnowing stage.