"What would you have us do then?" demanded Bert, the cooking troll. "Let them all go?"
"Well..." Bilbo began in a somewhat over dramatic fashion, looking upwards and raising his eyebrows. 
"You fink I don't know what yer doing? This little ferret is taking us fer fools!" Bert proclaimed as he took a jab at Bilbo with the ladle he held in his hand.

"The dawn will take you all!!", suddenly shouted Gandalf before the wizard struck the large rock that he stood upon with his staff, cleaving it in two and letting the rays of the sun pierce through to touch the mountain trolls, turning them to solid stone in a few short moments. 

Flying down towards the dwarves from the rock she hid behind, the Fae freed her dwarven companions from their tied-up sacks and restraints.