It looks like those pleas for freedom didn't work and the liars aren't getting back into the dollhouse, so they are spending the night in the yard with their pretty, mucky dresses and each other. I'm sure their conversation will be riveting.
I think we can agree that when you're locked outside in the freezing cold not knowing what peril you'll face next, you may have the occasional mood swing. Or maybe they are just sick of Mona talking BS.
Looking at the ground, the liars contemplate how they got to this point in life. It sure looks like they could be debating how to start a fire to get warm before having to rely on some old-fashioned body heat.
You think the truth is this big shiny disco ball of purity then go ahead and try it. See what it gets you. Telling the truth to the wrong person at the wrong time is how I ended up where I did. Take it from me you're always better off with a really good lie.