I saw it more that she's just inexperienced in aetheryte travel, so she picks up on this kind of thing more than others. Could also have to do with her being a poor mage (maybe she's not good at using aether well) so magical things could affect her slightly differently
I also assume when she says "just me" she means of the Scions (or even just you, her and Alph); she'd be more like the "common" person who doesn't use aetheryte travel really at all, and attuning and using aetherytes may be "odd" to most. The other Scions, however, would be using aetheryte travel a lot in their work, so are numb to any "different" sensations it causes.
