I can indeed identify with two aspects of this statement. First, I have read other poetry that spoke to me in such a way as to provide therapeutic benefit. I really don't think that is going to come as an earth shaking revelation because I think most of us have had such experiences. The second is about writing poetry with the same intent. Or, any specific intent for that matter. While I have set out writing with a specific intent in mind, I don't do it often and usually don't do it well. It is all a part of that "forced" and very unnatural flow that seems to inflict poems which such intent. Fact is, I can't tell you right off the last time I wrote a poem with a specific "intended message" before my hand started dragging the pen across the blank page.
Marilyn Hacker bio (here)