I'm Hearing Voices: Emotion

So today was the hardest assignment yet for I'm Hearing Voices, if you ask me. Show some emotion in 250 words or less. I am going to give just a (tiny) bit of back story here. Amy is a seven-year-old girl, whom Sylvia has been 'mothering' since they've been locked in the school. (And I'm still under 250 with that.) ;)

Sylvia saw the grey hand reach out and grab Amy’s leg. It was like time just stopped for a second, then hurdled forward as Sylvia grabbed the gun and shot the zombie in the head. Blood splashed across Amy’s jeans, and the hand let go and fell to the cement floor. 

Sylvia didn’t have time to stop. She shoved Amy into the van, got in next to her and slammed the door shut. Erwin pealed out of the garage, thudding over the grey body they’d left behind. Her heart was pounding. She couldn’t look at Amy’s face. Instead she looked at the dark red blood on Amy’s pants. She felt herself hesitate, for just a second, afraid of what she might see. Then she pushed up the leg of Amy’s jeans.

Everything contracted around Sylvia’s heart so sharply it hurt, before slowly melting away and spreading through her limbs like warm water. Her hand trembled as she ran it over the girl’s pale, unbroken skin.

“It’s okay,” she whispered, trying to catch her breath, “you’re okay.” Goosebumps spread across her skin, and she looked up at Amy. Amy’s eyes were still wide with shock; the tears Sylvia had been trying to hold back, broke through. She held Amy and cried.