The poem is a short conversation between a person and their own body. The body asks a painful question: why don't you take care of me? The speaker's answer is cold and blunt. The body doesn't look like "them," meaning other people, whoever sets the standard for how a body should look. That one line suggests the speaker is judging themselves by someone else's idea of beauty.
What makes the poem unsettling is how the body responds. Instead of fighting back, it gives up. It cries in "excruciating pain" and tells the speaker to do whatever they want, even to destroy it, just so it can look "normal." The quotation marks around that word hint that normal is a false, unfair goal. The mood is heavy and sad, with a quiet horror in how the body accepts harm as the price of fitting in. The title, "Fallen angel," adds to this, suggesting something once pure that has been brought low by shame and pressure.