Who does the narrator think the woman is mad at after their conversation

Choices:
A. not enough information
B. Herself
C. Her job
D. Her work ethics
Herself
Some years ago a woman on our staff came into my office to, basically, tell me off and complain to me about others and about myself.
This woman had not been very supportive of me in my role ever since I began working there. I couldn’t figure out if she was arrogant or lacking in self esteem.
During this meeting / confrontation, she told me, in no uncertain terms, just what she didn’t like about some recent decisions I had made. I listened to her speak for about 30 minutes. She, quite methodically, tore me apart.
Initially, I had planned to hear her out, make a few vague remarks, and send her on her way, thinking that maybe she just needed to be heard. But about 20 minutes into her harangue, I had a change of heart. I decided that, if she asked for a response for me, if she asked my advice, I was going to tell her exactly what I thought.
She did, in fact, ask me for a response.
I asked her if she was a happy person, and said that I suspected that she was not, as she came across as a bully and was acting like a horrible person.
She sat and looked at me, then burst into tears. I waited.
Looking up, she said, “Yes, you are correct. I am a horrible person. And I am miserable. What can I do?”
We spent some time discussing what she could do, and (even though I didn’t want to take the time to do it) I asked her if she would like a mentor — me? She said that she would like such a thing.
This woman and I ended up becoming fairly, no, very good friends and she has been one of my strongest supporters. I didn’t expect that.