1. This was to get him to fight because they would be killed otherwise
2. She's not really standing up to him, just making a desperate attempt to get him to stay.
3. Yes that's because he was insulting Naruto, calling him an outsider despite everything he was trying to do for him.
1. She had seen Sasuke downgrade Naruto in wave arc. She defends Naruto against that and indirectly says it is actually Sasuke who is a coward. This is standing up to Sasuke.
2. Agreed.
3. And how is this not supposed to be standing up to Sasuke? Sasuke gives his opinion and Sakura doesn't agree even going as far as actually arguing with him.
4. You forget the fact that Sakura supports Naruto's dream even after hearing Sasuke has the same dream as Naruto. So once again, she is against Sasuke.
Are you seriously saying Karin would do any of these for Juugo/ Suigetsu? LOL