Turns out the one spreading the rumors was Hashimoto, who did so at the behest of Sakayanagi. Shortly thereafter, Sakayanagi appears before Class C and she informs them she has evidence regarding the rumors about Ichinose.
Our mother worked very, 
very hard to provide for us.
كدحت أمّنا في العمل لتغطية احتياجاتنا
Meine Mutter mühte sich
unglaublich für uns ab.
Mi mamá se esforzaba muchísimo
por nosotras.
Mi madre se esforzaba muchísimo
por nosotras.
Notre mère
faisait tout ce qu’elle pouvait
Mia mamma
Nossa mãe trabalhava muito,
muito duro para nos sustentar.
Ради нас с сестрой…
мама очень много трудилась.
คุณแม่เขาก็พยายามหนักมาก ๆ เพื่อพวกเรา