I wonder if maybe when the girls got home and let the dog out, it got loose. Maybe they called J because he had shared ownership of the dog and they wanted help searching for him/were panicking that it was running loose so late. I did see reports of a dog found the next morning, or at least I think it was morning. But I don't really see the girls going to sleep if the dog was still missing, unless the dog had the habit of running away and coming back on its own. Pure speculation here on possible reasons for calling J so many times when he was sleeping and hadn't been with the girls that night.