In this quote from "Isla and the Happily Ever After" by Stephanie Perkins, a younger sister encourages her older sibling to pay attention and trust her advice. The sister points out her increased height to emphasize her maturity and the wisdom she has gained, suggesting that her perspective should be valued. It highlights the common dynamic where younger family members are sometimes underestimated but may have insightful advice to offer.

The quote also underscores the importance of listening and considering different viewpoints, regardless of age. It suggests that, despite the typical hierarchical family structure, younger siblings can be more knowledgeable or have better ideas at times. This moment serves as a reminder to be open-minded and attentive to those around us, especially family members who might have unique insights.