The biggest problem the show has is that the majority of Conflict and Mystery could be explained if people just had real conversations and it is on FULL Display in this Episode. The brief dialogue between the characters of 2-3 Statements from each person with the discussion getting interrupted (by some outside interference) is a basic trick that the show uses way too often. Do the showrunners not know that you actually have to have a PAYOFF to long teases of frustration? OR are they scared because they know the entire show would end if everyone sat down and had a hour-long conversation where they could ask and answer questions?
I won't go into spoilers, but this episode's description is "Leeane Torments Dorothy" and you really have to wonder if that's true when you watch it? Leanne spends the episode trying to take care of Dorothy. Dorothy is the one who keeps abusing Leeane when she tries to legitimately help her. Leeane eventually has to be upfront with Dorothy and states "I'm all you've got" and that's supposed to be sinister, but its actually TRUE because all the characters are Selfish Sociopaths except for Leeane. Also, the "conflict" of this episode leads to a hilarious climax that is supposed to be serious.
Sadly, even Rupert Grint couldn't salvage this one.