Hi, Richard, thank you for your comment and thank you for stopping by! I'm glad that stood out to you. I actually wrote the first draft of this poem about 8 years ago, but had a hard time deciding how to end it until a couple weeks ago when I decided on those last two lines.

I wanted to illustrate incompatibility and disillusionment in a relationship and the way that can intersect with one's psychological health.

I imagine the last line as the wife finally being willing to look at the reasons why the relationship is destructive for her and why her ideal state of health is different than his.

The last two lines end up being the first time that she describes herself outside the context of their marriage, and I enjoyed the way this revealed that she has become aware her unhappiness predated their marriage and clues the reader in on why she may have been attracted to the marriage in the first place.