Let’s call this ironic subtext, where every word out of Madeline and Helen’s mouths is the exact opposite of what they really mean. 

We have all been in a position where we loooooathe somebody, but have to act in a civilized manner; where we want to kick this person, but are forced to kiss them; where our polite decorum seethes with bitterness or jealousy. 

Think — a boss you despise asks you to stay late on a Friday night for an assignment you think is totally pointless. You might retort, “Sure! No problem,” but is that really what you MEAN when you say it?