Why did Esperanza run to fetch water for Hortencia before anyone else? Chapter 7-8?

Esperanza has started to change her attitude and adjust to her new life. When it comes time to bathe, Esperanza momentarily forgets that she will have to bathe herself now and Hortensia will no longer help her the way she did back in Mexico. However, Esperanza does not express any indignation about her circumstances in this instance (as she has done before). Instead, she accepts this new way of doing things, which shows her increasing adaptability and maturity. Esperanza even agrees to help the other women prepare for their baths and fetches extra water for Hortensia as well.