I like the composition on this a lot. One thing I would change on this is the color scheme and that is more of a personal taste than anything. To me, the bright vivid colors say invocation that summons raw Power, bedazzling, Fires or any other flashy spell.
I see her leaning more towards earth tones of Browns and greens to reflect more of a nature based summoner, or Color tones that would match wolves in shades of blacks, greys,browns and white. I feel that would also be truer to the title of Wolf Mage. Again this is just more of a personal taste based on recommendations I would use if I were to create an image of this magnitude.