My followe is the one from Asuras shrine... The mage.
Sudenlly i lost her, where can i find her? Coz shes not at the shrine

If you told her to leave you and she gos back it may take her a while just use wait like 8 game hours or if you told her to wait and forgot her use wait like for three or four days and they will go back where you meet them.

I told her nothing... I was in whiterun selling some stuff al of a sudden i look around and shes no there...

then use wait or fast travel that should fix it

Tried that... :/

If you're on PC, you can try the following console command:

player.moveto 28AD1

This will warp you to wherever Aranea Ienith is, assuming she still exists somewhere in the game.

Thx bro have an awesome week