The pronoun her is not vague. Select its one clear antecedent.
In 2014, Maryam Mirzakhani was awarded the Fields Medal-one of mathematics' highest honors-in recognition of her groundbreaking work on the geometric properties of curved surfaces.
In 2014, Maryam Mirzakhani was awarded the Fields Medal-one of mathematics' highest honors-in recognition of her groundbreaking work on the geometric properties of curved surfaces.