Another way you could consider this is instead of 'seeing' auras she could 'feel' them in a tactile sense. For example, if she were talking to a single person alone in a room, their aura might feel like a small draft in the room or a hand held fan blowing onto her skin. If that person starts channeling magic, it could escalate to the intensity of a room fan washing over her. Surround her by enough people or enough aether flow, and it would be impossible to distinguish one flow from another as they all buffeted her skin. This would also allow her to use her more tactile sensitive body parts, namely the hands and face, to explore the aether flows around her.
I'm a tinker! Tinkerer? Hrm.... I'm an artificer! - Myxie Tryxle | Impressions and Memories
