A purple flower called violet. The poet describes the flower. Beauty is the theme of the poem, and as the poet has repeated the words "modest violet", it shows that she likes the flower, hence the repetition of the words show her attitude of inclination towards the flower.
They use simple emotion words like the dog was sad that the little boy went to school or the baby was happy when the mother played peek a boo with her to make her laugh
It basically means that she is also speaking up for the other babies that it has happened to.