Her story:

Malaika, a 38-year-old gorilla, died Tuesday afternoon from what zoo officials say was congestive heart failure. The female animal developed a cough over the past ten days that was not responding well to treatment. A cardiac evaluation on Tuesday showed she was in congestive heart failure. After the exam she went into cardiopulmonary arrest and was not able to be resuscitated.
The life expectancy for gorillas in captivity is 31 years.