Continuity mistake: When Dorothy, Blanche, and Sophia are sitting in the reception area arguing with Kirsten, Sophia sits forward and says she loves Rose as if she was one of her own. When she sits forward, you can see the beads on her purse handle are strung tightly. When she leans back in her seat, you can see big spaces between beads, as if some have been taken off.
Character mistake: In her first appearance, Kirsten liked Dorothy, Sophia and Blanche and said that after her visit she now understands why Rose loves living with them. In her second appearance, she heavily dislikes the three women and states that she never understood why Rose preferred living with them over moving in with her.
Suggested correction: In her second appearance, Kirsten walks in while the women are laughing about something unrelated in the waiting room and her mother is in the hospital after a Heart Attack. Could it be possible that she's a bit upset, not thinking, and forgetting about what she said in her previous visit? In her first visit, she sees the positive, but subsequently she saw things she found questionable (she mentions things she sees like all of them getting into a car dressed strangely (it was for a play but she didn't know that)), and eventually her mother has a Heart Attack. She may have simply put two and two together and got five. It's a human characteristic, not a character mistake.
However, in her first appearance she specifically said at first she didn't get why Rose lives with other women but after having met the three she now understands why she's living with them. In the other episode she states she never got it in the first place.
