It was a lot of Rs first real exposure to her and let her take back a bit of the Trump narrative about her. "She's dumb" "she can't speak" she showed she wasn't, that she can, and that she's better at it than Trump. And that she'll sit for an interview with anyone, unlike Trump who keeps cancelling interviews.
I will poop in my pants if any of the Fox news loyalists think anything other than she made a complete ass of herself. You and I both know she could say absolutely anything and it wouldn't matter. It will get spun to make her look like a complete moron and the viewers will just gobble it up. Their site right now is 100% negative about the interview and there's no doubt in my mind there's a lot more where that came from.
But here's the real audience: every single restaurant and diner and bowling alley and gas station and mom and pop whatever in the south is blaring fox 24/7 and I'm sure she caught the attention and the ear of more than a few people who know almost nothing about politics.
and those people who know nothing decide how they vote based upon how their parents voted. I wouldn't hold my breath that they would suddenly posess the relevant critical thinking skills to evaluate who they're electing.