Once Upon a Time (2011)

S1E18 The Stable Boy

Emma tirelessly hunts for proof to clear Mary Margaret of the murder charges against her for David's wife, Kathryn. In the enchanted realm of the past, before darkness took hold of her, Regina faces a heart-wrenching decision: betray her mother, Cora, for the chance at true love or marry into royalty for a life of privilege devoid of affection. Amidst her struggle, the pivotal moment that ignited Regina's deep-seated hatred for Snow White comes to light.