Which one is correct? If both, is there a difference between them?
1. I am on good terms with her.
2. I am in good terms with her.
I would only use on.
So would I.
"on good terms" is correct, isn't it?
(Not a Teacher)
If you want to use "in", you could say:
"I'm in her good graces."
or
"I'm in good with her."