The mini-bomb's end had her inwardly cheering, but like Tilsa she was uncertain what else she could do beyond casting spells and hoping for the best. From the corner of her eye she saw Drake's move, his hands grasping onto the flame (was he mad? were they desperate like that? yes, yes we are).
Siri's throat tightened when Caspar said he had to go help someone else, a combination of panic and worry. Don't go - Help - Don't go- "Go. I'm fine." And it was not a lie because she was fine, she had been protected by Caspar this whole round. However, just because she was alone now didn't mean she intended to stop casting (despite the lack of effectiveness against the Bombs). "Just." What? Nothing. Let. Him. Go. "Be careful." The cure spell left her fingers without thought. She aimed the spell at Cas from where se was, hoping that it would provide him with a brief respite before taking on more damage.
Maybe she was not white mage material, but she still knew cure. Now that Caspar was helping Merry she began focusing on casting another cure, this time for Merry. He was the one with the water spells, he could not go down.