I did think that about Katherine. She should take Jeffries to Danny's office and let her see the drugs and mess. And Jeffries has already said she's 'excellent' at her job.
I know what you mean about the comedy but I think we're supposed to find Danny's antics funny. When the little girl appeared in his office and no-one was thinking of her safety around a drug-crazed man I was like :/
I also think we're supposed to find that annoying wet girl funny, which she is I suppose up to a point but then just becomes predictable.
I've not read any amazing reviews of it so would be surprised if it got a second series in its current form.