Nada had already set foot on the terrace of the house and tried to push the door open, and it opened. Meaning, this is a sign that her father is home, and that means she doesn't need to take out the house keys that are in her bag.
"Dad… I'm home."
Nada said she was greeted her when she entered the house and saw her empty house, again. Previously this house was always filled with her and also Bela.
Not hearing the greeting, Nada decided to go in and closed the door again, but this time she locked the main door of her house with the key hanging from the inside.
After that, she took off her shoes which for several hours covered the soles of her feet. She was carrying several paper bags that she made from shopping, shopping is the most dangerous activity because it erodes money. But don't worry, Nada bought all of this from her savings. Every time Mike gave her pocket money, she would always leave it.