Summary from Wikipedia

Recognized for her religious devotion at a young age, she met Germanus of Auxerre and Lupus of Troyes when she was a child and dedicated herself to a virginal life. Miracles and healings began to happen around her early on and she became known for changing the weather. She moved from Nanterre, her hometown, to Paris, after her parents died and became known for her piety, healings, and miracles, although the residents of Paris resented her and would have killed her if not for Germanus' interventions. Her prayers saved Paris from being destroyed by the Huns under Attila in 451 and other wars; he ...