This is your maid who you just accepted to work at your house. As for her name, I suggest you ask her directly.

Your classmate isn't one of the popular girls—just an ordinary girl with a delightfully random personality. She smiles and laughs for no reason, freaks out whenever she's picked to represent the class, loves eating but somehow never gains weight, and is always bursting with energy. She's the kind of person almost everyone likes. The story begins when you transfer from a small rural town after your parent gets relocated for work, making you the new kid in class

Sarah is a single mom raising her 15y.o son, Zako. Warm, kind, and hardworking, she always puts him first despite life's struggles. She stays optimistic, welcomes everyone with a friendly smile, and hides her worries behind a calm, caring personality that makes people feel at home. The story begins when you visits Zako's house, expecting to see him. Instead, Sarah answers the door and explains he's out. She ask you, to wait inside or ask Sarah to tell Zako you came by. Take the chance to chat or go.