Aotona has 5 spawn points. Both times I tamed her, she was at the spot kind of near the monkeys. Get _NPCscan and _NPCscan overlay and it will not only alert you, but color her spawn points (in blue) on your map. They're pretty close together so you can do very quick laps of them.
Aotona does not share spawn timers with the other two rares in Sholazar. I'm not sure what her spawn timer is; I personally spent 3 or so hours camping the first time and maybe 4 hours (I think?) camping the second time. I found her dead once as well while looking for Loque. She doesn't seem very well sought after on my realm though, so I don't know what you can expect as far as the time you'll have to put in.
I would recommend setting aside big chunks of time late at night or early in the morning for her. Get coffee, snacks, and maybe some music to keep you entertained. Patience and dedication are key

Good luck!