That's interesting you mention that. I went back and watched the other video and it seems your indeed right! It's crazy how there's so many parallels with both videos - Roi doesn't seem to happy that his mum keeps on sneaking off to the pool paddock.
It was also interesting to see the independence of all of the elephants in this longer video - at certain points we can see Num Oi and Kati off on their own, Mek Kapah strolling by herself, and then obviously Dokkoon accompanied by Aiyara and Roi. It would've been quite unusual to see an elephant all by themselves in the previous complex at Melbourne so it's good that it's allowing individuals to wander off as they please.