It's ok
I'm going with Red knowing about Liz, otherwise it was be just weird..
about Agnes, you would think her being a mother would be the most important thing, or one of the most important things in her life. I wasn't a fan of the storyline too. You would think even a mention of her name every eppy, but nothing!
I thinking I wonder if Dembe sort of knows as well, aww poor Dembe, what's he going to do now without his best friend...