How Did Ganyu Get Her Vision?
While the Qilin, the race of Ganyu’s adepti half, tends towards peace, they did not hesitate to help Morax subdue an ancient sea monster. Ganyu herself helped the God of Contracts in the Archon War.
As he established Liyue, she stayed to help the humans and fledgling Qixing as their secretary. She was in the unique position to become the bridge between humans and adepti. This decision resulted in her Vision appearing. It was proof of her new duty, and alongside her, witness to the history of Liyue.
Maybe the rules for adepti are different from humans when receiving a Vision. However, Ganyu is only half-adepti, which might mean she follows human convention instead. In that sense, her circumstances don’t match the other humans’ circumstances. Though, it does match Chongyun’s circumstances to an extent. Both affirmed a resolve to do something, leading to a Cryo Vision.
Still, we can only confirm once we know more about the Tsaritsa and what ideal they once represented. Anyway, hope this improves your appreciation of the character! A Genshin Impact Ganyu rerun is coming up soon on patch 3.0! She usually is the featured character near the Lantern Rite or the game’s anniversary. Wait for those events if you’ve missed out on her banners.