Don't worry. You did give it a thumbs up. It's just the icons are not very intuitive. A darker green and a thumb up would be a better icon than a red thumb down to show you've given a thumb up.
She could probably say a similar thing: she said what she thought to the people's face and the whole thing still pisses her off. You are both more similar in your dealings than you realise. Fair play to both of you!