Her mission there was to push for
1. Peace.
2. The end to the shocking amount of sexual violence there.
Prevalent sexual violence happens in places where women are seen as powerless and disposable, subject to men's will at all times they are unprotected by other men, and having no will of their own that needs to be listened to.
It was unfortunate that a mistranslation occurred, and Mrs Clinton wasn't asked about her President's opinion, which, as a member of his cabinet* and as a delegate for him, would have been a relevant question. However that mistranslation happened. Given what she was asked, her response, and even her vehemence was entirely appropriate. In that moment she was a foreign woman in Congo, in a powerful position in her own government, safe from attack and physical reprisal if she spoke out asserting her thoughts and her rights to hold and to do an important job. She had the safety to speak out shockingly and assertively into a conservative misogynist forum, about the importance of HER OPINION, as against the relevance of HER HUSBAND'S OPINION in that context and moment.
If this part of the interview is shown widely in Congo and some other parts of Africa, it will probably form a tiny but real part of the journey there towards equality of rights and responsibilities between the sexes.
*Senior member of his government, whatever. I'm not precisely au fait with American Executive government arrangements.