Why does Sophie admire her brother Geoff?

Sophie admires her brother Geoff for his quiet demeanor and the air of mystery that surrounds him. As an apprentice mechanic, Geoff ventures into parts of the city that Sophie has never seen, making her curious about his life beyond their home. She imagines him meeting interesting people and experiencing adventures, projecting her own dreams onto his seemingly broader world. To Sophie, Geoff represents a link to the excitement and freedom she craves, and she yearns to be part of the unknown places he visits, hoping they hold the promise of a life beyond her routine existence.

This question related to Chapter 8 English Flamingo Class 12th NCERT.
From the Chapter 8: Going Places.
Give answer according to your understanding.