[ she does understand being angry at dion for killing someone he cares for, but she didn't think a punch was necessary. she doesn't think he has to be okay with dion ever. she doesn't think dion doesn't understand the gravity and weight of taking of a life.

she lost control in the memory that luke saw, but that was a very scary memory for her because she tries her utmost never to exorcise a spirit because that's wiping out someone's existence. she doesn't have the right even if she has the ability.

she listens and lets luke's words settle in her mind. ]

I don't think you have to get along with him. I don't think you have to be happy with him ever again. [ she's not a stranger to people being violent, but maybe it's because she didn't expect this from him. she didn't stop to consider his feelings more. ]

Because Margaret wasn't angry with him, I didn't think to understand your grief as much. I'm sorry.

[ it has been something she's failed at before—when she's too focused on the victim to think about those around the victim. ]