Ok, first off this is my first post so hello everyone, and Mr. Sanderson/Brandon/EUOL/whatever us fans are supposed to call you, you are an awesome writer (my new favorite. please hurry up and publish more books
Based on what i have read online and the books, i've come up with this theory: Vin's unusual amount of power stems from the third magic system, hemalurgy, and her ear ring. We know from what EUOL has said that Inquisitors are created through the usage of hemalurgy, involving the deaths of several people. We also know that the Well Spirit has the ability to control people with spikes in their bodies, like Marsh and Zane, and create voices in their minds. Is any of this remind anyone of Vin's mother? She is described as mad and hearing voices, then she goes and kills Vin's sister and impales Vin's ear with the ear ring. My guess is that this too is an example of hemalurgy and is a main reason behind Vin's power.
Thoughts anyone?