Выпуск 1025. Родила и попала в рабство?

At the age of 9, her mother took her to a sanatorium, but did not return for her. So the girl found out that she had been living in a foster family all this time, and her name was not Alina, but Nastya…
21 years ago, she was found in a hotel room, and her biological mother was put on the wanted list. Where did the girl's mother go? And why did she leave her daughter?