Yep! It was said in ep 20 that the Madam of the brothel(?) found her and that she had lost her memories of what happened before. Her celestial spirit was injured.
I just realized, this might be the first Cdrama (at least i've watched), where the FL transmigrates into a celestial world rather than the Wu Xia world.
Okay so from season 1 we know that Fan Xian and his mom came from the future. The modern time, and probably why…
Basically what the comment above said, but that is why all the rivers and places Fan Xian mentioned in his poems in the first season were all "new places". Since it wasn't in history, but rather, they are still going forward in time.