So is there multiple version of 'Dew', or is she like Xiao Yang here who has the wuxia power but in a Western setting?
They have around the same number of transmigrations. Yang may have never truly reincarnated, only she lost her memories on Earth, and when she returned to xianxia her body reset to her prior age but not her memories to process the brutality. Dew is going by reincarnation logic for a spiritual bond.
The simplest order would be Xianxia->Earth->Xianxia and Game-> This world together.
So their roles may be Xianxia student / teacher -> Earth amnesic(?) orphan(?) / nun -> Earth artist
/ cat Dew almost 100% -> Xianxia Yang return and reset / Game Dew loops -> Evolving world together as lovers.
Edit: Looking at ch 44 it could be more convoluted if Xiao Yang's memory was only stiched once, and she was born on Earth->Xanxia->Earth->Xanxia->Present, but it still doesn't explain forgetting the nun form.