The Huntsman: Winter's War

Evil sorceress Queen Ravenna's powers allow her to know that her younger sister Princess Freya, whose powers have not yet emerged, is not only involved in an illicit affair with nobleman Andrew, but is also pregnant with his child. Freya gives birth to a baby girl, but later discovers that Andrew has murdered their child. In grief-fueled rage, her broken heart freezes over and she kills him with her sudden emergence of powers - the elemental control of ice.