The issue I had with the tank was where did they get the fuel, they gobble it up.
I think Michonne grabbed Judith, that would explain where the blood on the carrier came from, and she got emotional when she previously held her. I think she lost a baby or child she hasn't spoken of.
And don't be surprised if Tyrese and the Children of the Corn end up joining up with Carol. He'll probably develop feelings for her not knowing what she did.