You were pretty harsh on her.
→ 너 걔한테 좀 심했어.

[예문]

A: I was so out of line yelling at Rachel yesterday.
A: 어제 Rachel한테 소리 지른 거 내가 많이 지나쳤던 것 같아.

B: Yeah, you were pretty harsh on her.
B: 그러게, 너 걔한테 좀 심했어.

A: I wish I could take back what I said.
A: 내가 했던 말을 되돌릴 수 있었으면 좋을텐데.

B: There is no way to turn back the clock. Just apologize.
B: 시간을 되돌릴 수는 없잖아. 그냥 사과해.