This is what gets me, it’s like some paradox.
Jack goes online as said above and infantilises herself. With the teething necklace, childish language, and it being plainly obvious through her choice in partner that she likes to be mothered.
Yet, when she can’t even nurture a relationship with a human partner correctly because of her evident narcissism, she brings a kitten who is totally dependent on her into the fold? It makes no sense.
The kitten is actually the worst thing she’s ever done. Bringing another life into her daily chaos is unforgivable.