Back when I first saw that surveillance video I mentioned here that it looks like Elaina is crying and rubbing the back of her head right before burying her head in Angela's chest while Angela is rocking her like that.
Now that NG had it on the big screen and I can watch it over and over and over on my computer, I'm positive of it. I wish I could cut the video down to just the most important seconds, but I obviously can't.
Look at 3:22 1/2, almost 3:23 on that tape - be SURE to fullscreen the video first by clicking on the little icon that looks like a small white square within a larger white outlined box (you'll have to hit your ESC key to make it stop being fullscreen after you're done).
http://www.hlntv.com/video/2013/06/18/friend-claims-missing-tot-had-black-eye-bloody-nose
Watch it a few times right there.
As the footage continues you see Angela kiss her twice on the top of her head and then Elaina rubs her eyes, too, another sign of crying (or being tired, but crying in this case).
Then the footage ends and gets started over again.. but we know from the original footage that at this point she stood up and put Elaina in the stroller and left. (Really wish news shows wouldn't always loop clips like that, I know they need a background video/image while they talk that relates to what they're saying but I'd rather see it play out fully then cut to something else then play out fully again then cut to something else again, etc to make the looping more clear.)