Um, every day, I mean she was very highly strung.

每天，都敏感。

She was very very highly strung, so you had to be careful what you said next to her.

敏感，所以你在旁边说话要小心。

" To be highly strung" means to be a little bit nervous and to be upset easily.

“To be highly strung”的意思是有点神经质，很容易心烦意乱。

That's why I'm a little highly strung.

这就是为什么我有点紧张。