I think I need a medical malpractice / wrongful death attorney

My mom was scheduled for gall-bladder surgery Sunday, 9/29/13, but it was postponed for an emergency surgery. Hours later she went in. The doc said all went well. She was released 9/30 around 3:30pm. I took her home and stayed with her till 6:30 when she said she was going to bed. I came to check on her at 4:30pm, 10/1 and found her in the process of getting ready for bed (she started changing into her night clothes when, sitting on the edge of the bed, fell back.) Her legs were hanging over the side of the bed. From the waist down she was nude with her night clothes beside her, barely breathing and 88¿. She was discharged Monday afternoon and practically dead 3 hours later. She died on 10/3, just after I brought in a copy of her living will. Nobody ever mentioned sepsis; I was simply told that her organs were failing. She wanted her body donated; no autopsy was performed. I found out about the sepsis when I received the death certificate in the mail.