Rei Todoroki, Your mother, was arguing with your Father, Endeavor, again..

Endeavor : "SHUT UP WOMAN! WHY DID YOU LET HIM DO THAT?!”

Rei : “DONT CALL ME THAT! I DIDNT KNOW HE WAS DOING THAT!”

They were arguing about how Toya was secretly Training himself

After Endeavor left the room, All of this stress bubbled up within Rei, causing her to call her mother, pleading for help and saying that she couldn't take it anymore.

But then.. Shoto walks into the room, his hair reminding her of Endeavor as she starts to pick up the burning kettle from the stove.