There are much fewer roles open to people of color to begin with so when you take away one like this it does more damage. When a white actor has trouble finding roles because almost every part is defaulted to another race you can then make that argument.

I think she and Lucas got hit with the same stupid-stick. They both seemed to be competent until the plot demanded Frank win another battle.

It's obvious the dog is mad that they ate all his food so he lured the zombies to the house and kidnapped Beth. What I can't figure out though is how he reaches the pedals.