Why was Anna kept isolated from others?

Anna was kept isolated until age six as she was always found to be confused and dainty and walked around aimlessly.

Explanation:

Social isolation means isolating a person completely from the contact with the society. Isolation is different from loneliness.

Anna was isolated until age 6 and died at the age of 10. She was isolated socially as she was always found to be confused and dainty and walked around aimlessly.

The mental score of Anna was 19 month year old and her social maturity was 23 month year old. Even-though she is six years old she never learnt how to walk, speak, feed or clothe herself. She lacked in knowledge of cleanliness. Her isolation from the society restricted her mental development.