She must be referring to around 1995:
"One afternoon Maurice and I took Coco to the Memphis Zoo. It was without a doubt the most depressing zoo I’d ever been to in my life. There was next to no foliage or, for that matter, animals, which for the animals at least was probably a good thing. Coco probably doesn’t remember, but she’s visited more zoos and aquariums around the world than any other kid, though her favorite places have always been hotels." ... from the book "Girl in a band" (2015)