Singh claims that he took on the difficult task of trying to teach them ordinary human behaviour. Amala died in 1921 of a kidney infection. Kamala showed signs of mourning at her death. After this, Kamala became more approachable. She was eventually partially house-trained and became used to the company of other human beings. After years of hard work, she was able to walk upright a little, although never proficiently and would often revert to all fours when she needed to go somewhere quickly, and learned to speak a few words. She died in 1929 of tuberculosis.