I can see how the not knowing there, and the stress of trying to protect someone, would cause nightmares. Are you open to seeing a sleep specialist? There are a few in Vallo. I can put you in touch with the one Sabrina sees - it's helped her a lot. She used to just stay awake in the woods all night, but now she's actually sleeping decently. In her own bed.
And in the meantime, I can help you get a good rest. It's hard to want to face things when you're tired and not feeling refreshed.