"Corners, which seem familiar, leading to unimagined, pebble-dashed estates, big boys eating worms and shouting words you don’t understand." - word choice
The word choice of ‘seem’ and ‘unimagined’ exposes her inability to negotiate her way successfully through this new, strange and unfamiliar landscape. It implies that unimaginable horrors lie around every corner. Her sense of confusion is strengthened as she is confronted by behaviour and language that is alien to her.