Coming to VOD in North America soon after already having played in its native New Zealand.

https://www.imdb.com/title/tt5699060/

"Sixteen year-old Laura Chant (Erana James) lives with her mother and four-year-old brother Jacko (Benji Purchase) in a poor new suburb on the edge of a partially demolished Christchurch, New Zealand. Laura is drawn into a supernatural battle with an ancient spirit who attacks Jacko and slowly drains the life out of him as the spirit becomes ever younger. Laura discovers her true identity and the supernatural ability within her, and must harness it to save her brother's life."