Souko Hoshina

She is the only daughter of the large financial group Hoshina family, also mother of Ikuto and Utau. Married to Aruto despite the strong opposition. After Aruto disappeared, she held on to her belief that he will return. Years after when Aruto's violin is found, she felt that Aruto died, and because she has become unable to wait, she remarries to Kazuomi Hoshina and bound her children to Easter. Source: shugochara.wikia.com