I have a 25 year old primigravida patient. She is a known case of motor neurone disease for the last 5 years. She is unable to move all her limbs and she is on ambulatory ventlator before her pregnancy. She is also a known case of DM on insulin. Now she reached 20 weeks of gestaion and attending our clinic regularly. My question: What is the best time to deliver her? What is the best mode of delivery for her?