This is a small-town Newfoundland novel by a small-town Newfoundlander, and I found the first-person narrative both believable and entirely comprehensible, which is a fine combination.
Our narrator-protagonist is Kit, a teenager (fourteen at the beginning) with an old head on her shoulders. This is partly because she has to deal with an intellectually challenged mother, Josie. After her grandmother Lizzie dies (a woman for whom "feisty" is an entirely inadequate description), Kit digs in her heels and, with the advocacy of the local doctor and the grudging consent of rest of the nearby small community, stays put in her remote house upon the gully. A young man, Sid, son of the minister, comes around regularly to help with the heavy chores like wood-chopping. It sounds like a story of isolation but actually one of other joys of this book is the sharp, unsentimental delineation of a host of minor characters, most of whom are well-intentioned, and some of whom are genuinely good for Kit and her mother.
One character who is neither good nor well-intentioned is Shine, a figure of menace who takes advantage of Josie's adult sexuality, which is not controlled by an adult intellect. His death comes at the hands of one of the major characters, as he is in the process of terrorizing all three of Josie, Kit and Sid. The fallout from that incident deepens Kit's isolation and accelerates her growing up.
I won't disclose the twist that derails Kit's happy-ever-after with Sid, her first romantic interest. It was unexpected (to me) but entirely defensible from a plot point of view, especially in a setting where the characters are few and heavily interconnected.
I liked the writing in this novel: it was vivid in its sensory imagery, and there was a very strong sense of place, which had elements meaningful to the characters (Lizzie's partridgeberry patch, for instance, a secret place where the secrets of Kit's birth are - partially - told). And the unsentimental, but also unjudgmental, transcription of Josie's loud, repetitive, moody and often uncomprehending speech struck me as being probably born from real observation.
I would recommend this one.