"Such nonsense!" Tess said in an enraged tone, "I would never dare to hurt the child whom I treated like my own!"
Tess treated Anna and her brothers like her own flesh and blood. The first time she got here in the Coleman mansion, she was assigned to be the twins' nanny; she fell in love with them at first sight. She was 30 years old when she first met them, and since then she dedicated all her love and attention to the twins; never once consider getting herself married.
Accusing her that she harmed her precious Anna is the most ridiculous thing she has ever heard. If she wanted to harm Anna, then she would have done it a long time ago as she was all alone with the twins most of the time.