For the Dark Faeries, I tend to think of Una from the movie Legend. She was willful, tempramental and secretive. Looking at it from that standpoint, I think that I would perhaps changethe barbie doll size to firefly size, it would make them a lot harder to hit in battle. Delete the special teleportation. Isn't conjuring a basic power for MoE? It becomes redundant. I would also change Faerie Dust to Elf Bolts and combine it with the level 6 life absorption(someone elf shot dies, at least in the tales I have read), leavethe power at level 6 also. Phasing I would change to something along the lines of dimensional shift. The realms of the Fae are in a slightly different reality. Combining empathic manipulation with the glamouring would make it a more effective power as the Dark Faerie would shift to the form that would be the most effective at manipulation and get the feelings that would make it more effective.
My Idea for a Power Table would look something like this.
Level One:Gliding(drop levitation as they just kinda float a foot or so above the ground), empathic glamouring, size change(human normal or firefly size)
Level Two: Eldritch Bolts of Concussive Force, Superspeed
Level Three: True Flight, Minor Healing,
Level Four: Curse(able to apply a bad luck curse on an opponent that lasts for 3-5 posts, Faerie would haveto identify the area she wanted to curse i.e. physical, magical, interpersonal)
Level Five: Command (The faerie can utter a command to an opponent that must be obeyed, simply commands, nothing too extravagent. Drop your weapons, Attack your allies. Leave this battle...)
Level Six: Elf Bolts(Magical stones that can incapacitate an opponent or kill them, the Faerie would have to state her intention as she casts the stone.
That is that way I would set them up. It makes the faeries a little more powerful andwould make them excellent spies and assassins.