The poem follows a single figure, "she," who has come through a hard stretch of life and now moves with ease. The first two lines set up a contrast: she "flows blissfully," but only "after crashing through hardship." The water imagery suggests a river or stream that has battered its way over rocks and finally reached smoother ground. Her calm feels earned rather than handed to her.
Then the last line turns the poem on its head. "Where now does she go?" is a question, and the poem doesn't answer it. The speaker seems both admiring and a little uncertain. Relief is there, but so is a hint of unease, since peace after struggle can leave a person without direction. We can't tell whether the speaker is worried, curious, or simply wondering aloud.
The mood is quiet and reflective. With so few words, the poem leaves a lot of space, and that gap lets the question linger after you finish reading.