[quote=Ichthys]
So what prevents her from creating the illusion of some sort of unbearable pain (say, a horde of wolves) that puts the person in shock or some other form of handicap, and just waltzing up and actually dispatching of her victims easily? What are the restraints to her abilities? As mentioned previously, magic is inhibited by the knowledge of the caster. What is the extent of her knowledge on illusions and the senses? This is what I was asking in my first question, pertaining to her understanding. :p I'm trying to get an estimated maximum for her spell prowess currently, gauging if she can be considered unbalanced or not.
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If you're going by scientific terms then yes, that is possible. However, it is unlikely she will ever be able to pull off something of that magnitude for a couple of reasons - the greater the illusion, the more power it requires, and also, the deception is only convincing up to a certain point. Her understanding of illusions is that you can trick more than just sight and hearing, and that if someone believes in an illusion entirely, they will react as if the real thing were happening to them. It does not, however, cause their physiological functions to react the same way. Let's use the pack of wolves example - a lone wolf might have been easy to miss, but if you have say five of them, you have to be able to hit at least one. If that doesn't happen or the hit lands and the wolf doesn't flinch, the illusion falls apart because the you'd figure out these aren't real wolves.

They might believe they are in actual pain, but unless there is an actual physical blow that would cause shock, their body won't respond. Besides, there are simpler ways of disabling someone other than casting a large illusion like an entire pack of wolves devouring the target - a poison dart, sleep spell, or simply hitting them really hard in the head.