"Ah, 'tis difficult to describe. So, every living thing contains energy, aether is what we call it in Eorzea, and just like every life is unique so is their aether. Colour, smell, sound, feel...This is what I can pick up on at great distance and use the information to identify who someone is." She taps her chin in thought, "For example, my brother Felih is swirly teal, Amber and gold, the swashing of waves and jingling of bells and the salt of brine. His aether is familiar enough to me that we could be continents apart and I would be able to feel and find him."

Over exertion on missions certainly could happen under certain situations, "Luckily we generally seem to have enough man power here to avoid over-taxing anyone but 'tis good you are aware of the pitfalls." She certainly hadn't been as saavy at that age.