She was guilt-ridden at the way she had treated him.

她为过去那样对待他而深感内疚。

《牛津词典》

She had treated him with interest, with encouragement, with malice, with indifference, with contempt.

她对他时而满是兴趣，时而充满鼓励，时而满是恶意，时而全是漠视，时而尽是不屑。

youdao

Willingham had often not treated her well, she recalled, and after his incarceration she had left him for a man who did.

NEWYORKER: Trial by Fire