Maybe the zoo is trying to get them comfortable enough to live together. I'm just guessing though, as I don't have enough information to really know for sure. I'm sure the zoo has had it's reasons, but these elephants are supposed to live in herds, and their favorite thing is being in the water, so they should have access to swimming in water deep enough to fit their whole bodies in, whenever they want. If I had to guess though, I would say that the zoo would like to provide all of that, but they are forced to be restrictive because of stupid money...
Maybe she's upset, stuck in that small pen all day. 🤨 Elephants need room to roam, grass under their feet, room for the baby to run, strengthen his muscles & a pool. This is very sad indeed. 😡