A little story in which I think Derek would react to Meredith being attacked.-

Chasing Cars

Meredith signed the DNR for Derek. She also signed the papers to have life support pulled from Derek. She has known him for 10 years. They have been married for 5 of those years. If you count the post-it note wedding. 3 legally. She and Derek had survived so much since she first met him that one fateful night in Joe's bar. That one night that would alter her entire life. She and Derek survived Addison, a bomb, she drowned, Rose, Derek going crazy, a shooting, Meredith tampering with Derek's trial, a plane crash, having a baby in a superstorm, and DC. Now here she was signing her husband's life away. The father of her children. They were Meredith and Derek. MerDer as some called them around the hospital. They survived all that just for Derek to die. Die after helping people in a car crash. He was crushed by a semi truck because she called him. She kept him in bed this morning with all her need for sex with her husband. With her McDreamy. As she walked into Derek's room, the nurse began to unplug him. Their lives together had barely even started and now he would be dead. She talked to him while the nurse took his tube out. His last breath flowed out of his lungs. She was ready for the heart monitor to signal that he was dead. But it didn't. She then heard a deep breath of air and coughing. She opened her eyes. She must have just died with him because she was in heaven. Derek was breathing while slowly opening his eyes. "Meredith?" She couldn't believe it. He was alive. "Derek? Oh my god. You scared me so bad." She started crying. He was alive against all the odds. His bleed must have somehow healed itself. He is the .1% to live after an accident like that and have a brain bleed resolve itself on its own. "Meredith. I'm so sorry I scared you. But I'm still here. I'm alive and I'm breathing. I love you. I love the kids. I couldn't leave you yet." He rubs the tear off her cheek. "You and the kids still need me. I need to be there when you win the Harper Avery. It's going to be us. Growing old together until I die in your arms at 120 years old. Have grandkids. All with you Meredith Grey. I love you Meredith Grey and I want to spend the rest of my life with you." They both chuckled. Later that night Derek was transported to Grey-Sloan and got the proper Neuro care from his sister Amilea. Derek lived that fateful day.

Set in 12x09

"Amy have you seen Meredith? I don't know where she is." Derek walked down the hall to his sister who had paged him. "She paged me for a consult in the ER. I need you to help me with these two guys on Neuro exams. That one farthest from us is a bit aggressive. After you can answer her, consult and see her." Amilea explained to Derek. "That sounds good to me. I'll handle the aggressive one." Derek went over and started examining him. He got done with the examination. Then he was off to Meredith's consultation. He walked down to the ER to talk to Meredith while consulting. What he walked into was something he never expected. Meredith was on the gurney. She was beaten and bruised. Bad. He saw Miranda, Jackson, Torres, Richard, Maggie, and Alex all around her. He rushed over to her side. "What the hell happened.?" He asked furiously. "Derek! I know she is your wife. Lexie is going to take over Amelia's service. Amelia will focus on Meredith because you know you can't do it. Personal relationship." Just as Mark said that, Richard spoke, "Karev, Pierce, Shepard. No medical help on family." "Screw that. We are all her family including you. We are also all the best in this hospital." Alex said. Him and Richard staring at each other intently. "Mark! Get off of me and let me help her. Your wife won't cover Amilea's service because I will be Meredith's Neurosurgeon." Derek pushed past Mark. But before getting to Meredith, Mark grabbed him and pulled him down to the floor just as Amilea walked in, Derek broke down on the floor with Mark restraining him from getting to Meredith. "Man I love Meredith too. She is my sister. But Derek you can't be her surgeon with this kind of emotional pressure. She is your wife. The mother of all 3 of your kids. You would do more harm than good. We need to let Amilea take care of this. You trusted her to be Chief of Neuro. We know you could do just as good a job as her if your mental state wasn't this way. All of the chiefs of each of the respected surgery types are going to meet and go over a game plan for Meredith after we find out all the injuries she sustained. Derek we won't let her die." Mark tried to get this in Derek's head. Derek then finally started to calm down from breaking down. Mark took Derek to an On-Call room so Derek could try to sleep since they wouldn't know more. Mark sat on the floor while Derek slept and prayed to god Meredith would be okay.