Too Dark to See by Chloe Heuch
After the death of her mother, 16-year-old Kay is on a mission to self-destruct. Unhappy at home and school, she only finds peace with the semi-wild ponies on the moors. She meets Sion up there, also looking to escape. They are drawn into a secret, intense love, but they cannot hide from their lives for long. An evocative, debut YA novel about a grieving teenage girl who finds hope in a wild landscape.