I don't think there's a colloquial expression that exactly captures the situation you described in the comments.

I understand that to be:

Person A is angry at Person B. Person A starts saying bad things about Person B to Person C, with the intention of provoking them.

The closest thing I can think of is that we'd call something like that

Passive-aggressive behavior

Whereby you are not directly attacking a person, but doing things to intentionally upset them. It covers a broad variety of behaviors, not just this. For example, if I were upset with a work colleague, and I ignore their requests for important work documents. I am not doing anything to them, but my passive behavior is aggressively hurting them.

So in your example, I would say that you were

"Being passive-aggressive to Hannah"

I don't think there's a colloquial expression that exactly captures the situation you described in the comments.

I understand that to be:

Person A is angry at Person B. Person A starts saying bad things about Person B to Person C, with the intention of provoking them.

The closest thing I can think of is that we'd call something like that

Passive-aggressive behavior

Whereby you are not directly attacking a person, but doing things to intentionally upset them. It covers a broad variety of behaviors, not just this. For example, if I were upset with a work colleague, and I ignore their requests for important work documents. I am not doing anything to them, but my passive behavior is aggressively hurting them.

So in your example, I would say that you were

"Being passive-aggressive to Hannah"