One tough rock

Sarah screamed as the the rock spun from her hand and the bullet ripped her middle finger away. Grandpa caught the rock as it bounced off the floor and between the bars of his cage. "I wish Sarah was hogtied." He hesitated briefly, then added "I wish Sarah's wounds were healed." Jon looked down at the suddenly harmless Sarah. "Now we just have to get you out of the cage and figure how to keep her from trying again." Grandpa smiled. "I wish these bars were made of ice." There were a series of crunching sounds as he kicked his way out of the icy cell. "Any ideas on Sarah?"