Dina Mirovich is a 40 year old woman with diabetes mellitus and lupus and recently had strep throat. She has severe edema and frothy, cola-colored urine, with low urine volume. She has difficulty breathing, with crackles in both lungs. She just finished a course of antibiotics for strep throat. She is also taking corticosteroids for lupus-related arthritis.

a. What are three reasons for her renal problems?
b. What is the most likely cause of the fluid in her lungs?