Sorry to hear that she is not making her a priority. Make X is the same way. Her business comes first no matter how long she has my daughter sitting at daycare.
It's sad that your 13 yr old sounds more mature. That is a lot of pressure on her to feel like she has to be the "grown-up" in their interactions.
I really hope your W wakes up soon before she causes any serious damage.
Has she always been this immature and dramatic? Or is she experiencing some kind of MLC?