What is the main problem in this story?

Please translate this sentence into English: “Ella abre la puerta de su casa y dice: «¡Adiós, mamá!» y camina a su carro.”

When does Victoria return from the restaurant?

According to Victoria, why does she never close the door?

What is the difference in meaning between “son las siete” and “a las siete”? When would you use each one?