I actually thought it was a positive thing that she had such a serious expression, as if she recognized the situation for what it was and was genuinely concerned. Most of the time she seems to have some sort of affective disorder whereby she shows emotions inappropriate to the context of what's going on (like when Jordyn got her head stuck in the bannister and all she could do was laugh, even when JB was saying, "It's not funny"). Lately I've been thinking she must have some very serious psychological problem (I know that sounds DUH in the face of 19 kids!) because with each episode it's more and more apparent she does very little hands-on work whether it comes to organizing things at home or on trips or interacting with the kids at all. I don't think it's just laziness--I think she is truly mentally incapable.