I think TES would be the best location for all 4 of the 1978 born cows to head to, then either Lady, or Zoe if she passes in the next few years, could act as a matriarch over Christie and Zuri's family. That way their hers finally replicates a real family herd like in the wild like many other elephant programs have done recently. Look at what Dallas did with their 4 golden girls and Sedgwick with their old cow Stephanie when the young Swaziland cows arrived in 2015. If Amy did not die at Fresno, she would have served as a perfect matriarch over nowalzi and amahle and her daughter miss bets if she hadn't passed neither, let alone a more abundance of cows for Mabu to mate since his arrival from Tucson
That is why I think all zoos should send the older cows (and some older bulls) to sanctuaries (TES and PAWS, PAWS has only one Asian cow. I am sure Gypsy would love to have friends again). The zoos then should focus on multigenerational herds and bachelor herds to support the American population of Asian and African elephants. But they are shipping a bulk of those animals to Tulsa Zoo when Tulsa Zoo talks about breeding elephants. It does not make any sense to me. All of the cows could go to a sanctuary and the zoo can keep Billy, Sneezy and Hank as all three can be AIed (or possibly naturally bred especially Sneezy as he has proven to sire calves naturally).