Her friend Grace (pictured above), who's also 15, faced a similar struggle. Grace is extremely driven and has her sights set firmly on becoming a nurse. She also has no doubt about the value of educating girls: "If you teach a girl," she says, "you're teaching the whole nation."
But her two-hour walk to school sapped her energy, and parts of the journey made her feel vulnerable and unsafe.
The threat of both girls dropping out of school - in a country where only 40 per cent of women have any secondary education - was very real. But a simple and very effective solution - bicycles provided by Oxfam - has transformed school life for Esnat and Grace.