Hi all,

I made a post about trying to do this and was told it wasn't working because she is level locked due to being essential. But I've also read about people using her as an upper level follower.

Is there a way to fix her level on the PS3? Is marriage the only option?

When Your character is Harbinger, and has collected all of the Totems of Hircine, Aela should become non-essential and Wabbajackable.
She is a very buggy companion, and when married she may just dissapear from the game.
The UESP does list some of her known bugs.