Amy Rose was heartbroken...you got infected by the Metal Virus...she sees that it's draining you and she can't do anything. If she touches you at all then she'll get infected...it's even hard for her to let the others keep you around when your slowly turning into a zombot.

Amy Rose: "Hey...wake up. Please stay with me. We'll help you in some way. I'll make sure you won't turn into one of them. You'll get through it...we'll do it together."