Based on the information from the forum, the studbook, and other sources, this is my interpretation of how the course of events unfolded for the Calgary Zoo's elephant herd between 1976 and 1991.
On May 25, 1976, Bandara, Kamala, and Swarna arrived at the Calgary Zoo from the Pinnawala Elephant Orphanage in Sri Lanka. Since these one year old calves were the only elephants in Calgary upon their arrival, Bandara, Kamala, and Swarna couldn't learn the proper elephant etiquette from older elephants thus leading some individuals, such as Kamala, to develop negative behaviours. Ten years later, on August 11, 1986, Kamala and Bandara had their first offspring, Chanda, later renamed Calvin. Since Kamala was a high strung, inexperienced, first-time mother, she likely lashed out at Calvin after he was born resulting in her injuring the left front leg of her son. Fortunately, keepers must have been able to reassure Kamala enough for her to accept Calvin as her calf as a photo, taken in November 1986, shows Kamala, Swarna, and Calvin together.
Source: Gallery: We look back at Calgary's awesome elephants | Calgary Herald
Unfortunately, as a result of the injury, Calvin's leg became infected by
osteomyelitis, a chronic infection of the bone with sores and ulcers on the surface of the surrounding tissue. Luckily, Calvin overcame the infection but his leg would never properly heal. The injury would later be the leading cause behind his death. On April 3, 1989, Calvin was transferred to African Lion Safari to most likely make room for Kamala and Bandara's expectant calf. Calvin later went on to become one of the most prolific bulls by siring five viable sons in North America and three viable daughters and three viable sons in Europe. Nearly four years after the birth of Calvin, on July 14, 1990, Kamala and Bandara had their second offspring, Maharani. Fortunately, this time, Kamala took to motherhood immediately, and the mother and daughter pair had a good rapport until their transfer to the Smithsonian National Zoo in May of 2014. Sadly, 16 months after the birth of Maharani, Bandara died from congestive heart failure on November 25, 1991, at the age of 16.
The opposite could be said that the separation between the mother and daughter pair is integral for Maharani to successfully reproduce again. Since Maharani is a high strung elephant, perhaps the fights between her and Kamala, after being separated for more than a night, are causing undue stress on Maharani. Is Maharani fighting Kamala as a way of letting off steam or is she fighting her mother because Maharani no longer accepts Kamala as a member of the herd? Since Maharani no longer sees Kamala as a supportive role model, perhaps the negative rapport that's developed over the past couple years between the two of them is inhibiting Maharani from conceiving. Would Kamala's absence cause such distress on Maharani that she might never be able to conceive again or is Kamala's presence preventing Maharani from becoming pregnant? Fundamentally, the reproductive viability of Maharani should be the top priority whether that means keeping Kamala at Smithsonian or moving her to another institution so it may better the odds of Maharani becoming pregnant and continuing her matriarchal line.
I agree with your points,
@AmbikaFan. The Smithsonian National Zoo is the best place for Kamala as the institution is committed to providing her, and the other elephants, with the best innovative arthritis treatments, she would be in complete isolation at an institution like the Phoenix Zoo, and the zoo made a promise to give her, and the other Calgary Girls, a "forever" home here. Kamala should remain at the Smithsonian National Zoo under the condition that she is separated from the other elephants but allowed to interact with at least Swarna, Maharani, and Spike with a barrier between them. However, if the keepers are successful in correcting Kamala's negative behaviours, she should be allowed to socialize with Swarna, Maharani, and Spike in the same space. In the best interest of all the Smithsonian National Zoo's elephants, Kamala should be separated from the other elephants, excluding her Calgarian herd mates, but only allowed to socialize through protected contact, for the time being.