I don’t think a lot of people seem to realize that Kara’s family is actually just as bad if not worse then Lena’s. Her Aunt tried to enslave two worlds, her Uncle was a vicious murderer who not only tried to enslave two worlds but also tried to kill off humanity. Kara’s father created biological weapons and thought it was a noble pursuit worthy of praise. Her own mother used her to capture a loved one
Kara knows very well that the House of El was just as bad and misguided as the Luthors. And deep down inside she knows that if she wasn’t lucky enough to be considered “one of the good ones” they would treat her with the same prejudice, the same hatred and judgment people treat Lena. It would probably be even worse since she is an alien. She would have probably been killed outright or locked up to rot in a cell.
So I don’t think that Kara is just angry about the fact that her friends have no faith in her judgment or the fact that they are going after her friend. I think that every time James or Winn or Maggie or J’onn attack Lena Kara feels like this is an attack on herself as well.
And the worst part is that nobody seems to understand where Kara is coming from.Not even Winn who should really know better considering his father’s history . Not James who was framed for a murder he didn’t commit. Not J’onn who was unfairly hunted down just because he was an alien. They should all know better and yet they are just as judgmental as Snapper. Kara considers her friends the best people on the planet and this must be such a huge disappointment to her. It must break her heart and make her absolutely furious at the same time
I think the only one who understands to some degree was Alex. I think that’s why she didn’t join the witch hunt against Lena