You only have one item to boost AP for a character that is rather AP reliant. I like that you put Mejai's in the description, but since you only have 4 items in your inventory, wouldn't hurt to throw it up there as well.

You could also switch out a rune or mastery point for the overkill on cooldown. Glyph Runes give about 3AP and you could easily put another point into Good Hands or Awareness.

I might also ask for more description on what you think the pros and cons of your build are; how she plays through the game, and the general playstyle this build lends itself to.

Overall though, nice build!