S1E6 Kayee, Jerry, & Jessica

OKAY im late to watching this show but WHAT! I find Kayee kind of annoying but i don't disagree with anything she's said. And I find Jessica so weird. I ran to Reddit when I saw Kayee announce she's leaving. Found threads of people saying Jerrys daughter who sleeps in his bed is not Jessica's daughter .....SO WHY IS JESSICA LIVING WITH JERRY??? She says for the kids, but aren't her kids like 20 years old? They should get out of the house too!... I think i hate jessica, and jerry is a pussy. Maybe Jessica aand Jerry belong on Seeking Sister Wives instead...