That became evident when the following text exchange took place:
Kate: I think I'm about to lose my mind.
Lydia: I think I'm going to run away from home.
Kate: If you run away from home, you're taking me with you.
Lydia: If I bring you, who will take care of the children?
Kate: Good point. Maybe we can find a kennel?
Lydia: I don't even care anymore. Too tired.
Kate: Dishes go INSIDE the dishwasher. Why is that hard?
Lydia: I threw some dishes out this morning. They needed scrubbing.
Kate: I know. I had a "f*ck it" moment right after lunch.
Lydia: Whatevs. My f*ck it meter is broken and I don't give a fig.