On the night of the second of February, he awakened crying. His mother called to him, "Jody, you're dreaming. Wake up and start over again." (3.134)
Here's the thing. Ruth doesn't come running into her boy's room when it's clear he's having a nightmare. She just shouts some sort of encouraging words from the comfort of her own bed. It's not exactly the tenderest mothering we've ever seen.