Gretchen mentioned to the doctor that Julie had been being really clingy, to the extent of crying herself to sleep when she and I had gone off to see Green Lantern last week leaving her with the girl next door as a babysitter. The doctor said we should just let her continue crying, because it's a "phase" and she'll grow out of it.
So we went out to dinner tonight with marniegucciard and Bonnie. (samwinolj was supposed to come too, but he wasn't feeling well.) Julie proceeded to emote from the moment that Steph arrived until we left and thereafter. The report is that she would occasionally become distracted by whatever game she was playing and forget that she was supposed to be upset, but would eventually return to "Mommy and Daddy will be home soon."
She was quite happy to see us when we returned about 2.5 hours after we'd left, well-fed and happy with adult conversation. :)
We'll keep working on this.