Sorry just realised i said that nadia was big sis to dina! Well technically dina is older but having said that i still think that nadia assumes the role of big sis boss/matriarch of the clan (you get the idea!) probably without the consent of others but she just thinks she knows better than anybody else.Well in all fairness maybe dina still is sweet and shy or a nice person but she's been pulled into nadia's orbit/world and unfortunately where nadia goes maybe she follows.If true then thats sad but as has been mentioned before nadia doesn't seem to have a very positive impact on the people around her (neither does mark!).
Being in the company of narcisissts disempowers people causes mental fog and even effects decision making you'll often see narcisissts surrounded by sycophants. (thats why they have the mistaken belief that they are popular and everyone wants to be like them when truth be told actually most people secretly can't stand them!) They literally are confidence tricksters in every sense of the word.
The sad thing is maybe dina is feeling a bit vulnerable and thinks big sis will protect her (nadia the rescuer and all that eyeroll) maybe nadia wants her to feel like that as she thrives off others needs/pain it looks like a bit of triangulation (another set up employed by narcs) to me.
Julia is better than that but probably nadia see's her as a threat and can't abide any kind of challenge to her ego.Thats my take on things anyway.
I just wanted to clarify that.