Strange World by Indigo Hawkins

What starts out a as a harmless school trip soon turns Sara William's small world upside down.
Stranded, on a deserted island, it feels like some sad story straight off the pages of Treasure Island, but this is no joke and to Sara's surprise it's not the short time she spends deserted that really terrifies her.
Instead it's the world she returns back to with clearer eyes, a world where they practically rely on technology for everything.
Perhaps just a little too much...