Remember according to common thinking Mab is hiding out at Arctis Tor. I will tell you that at SplatterCon!!!! two of the attacks summoned fetches and in one attack they were sent. If you want to know which is which, reread the section. When they're summoned the temperature drops and when they're sent it doesn't. Look for something similar to this.
Sudden blue light gathered around her fingers, and the temperature in the room dropped by about forty degrees. She spoke again, and flicked her wrist, sending glowing motes of azure flickering toward Slate.
The snowflake brand flared into sudden light, and Slate's advance halted, his body going rigid. The skin around the brand turned blue, then purple, then black, spreading like a stop-motion enhanced film of gangrene. A quiet snarl slipped from Slate's lips, and I could see his body trembling with the effort to continue toward Maeve. He shuddered and took another step forward.
Then this.
He shivered then, and when he exhaled his breath came out in a long, frosty plume. The temperature had dropped maybe forty degrees in the space of a minute.
I struggled to ignore the sounds of frightened people in the dark and focused on my magical senses. I reached out to the cold and the gloom, and found it a vaguely familiar kind of spellworking, though I couldn’t remember precisely where I’d encountered it before.
“A kind of ward. Trying to keep me from moving ahead.”
The first quote is from Summer Knight the next two from Proven Guilty. There is another quote but I'll let you find it. Remember the description of the attack on Pell. Do you think he would have noticed a forty degree temperature drop with his pants around his ankles?