Nesta isn’t a symbol of feminism just because she didn’t let Cassian help her. Nesta isn’t a symbol of strong woman just because she treated everyone around her like crap and refuse to live in society. Nesta being sad is not a reason to forget the character issues she has.
Stop trying to make Nesta be “not like the other girls”.
Nesta is a terrible and abusive sibling. Nesta doesn’t know how to live in society and talk to people. Nesta is a pride brat who is rude to everybody, and this shouldn’t be considerate as “cool”.
Your issues are not reason to treat people around you like shit, especially your family or people who truly wants to help you.
(By the way, Nesta was always rude and abusive to Feyre, not only when she was sad.)
(If Feyre “let her alone with her issues”, i bet you guys would say Feyre just care about “her perfect life” and “her perfect husband”, even when Feyre was a fucking victim the entire story.)