"Jenna was the same in her last few days as she was always: calm, grateful and resilient to the end," her father, Stuart Lowe, told The Times yesterday. The Capetonian, an advocate for organ donation through her social media campaign Get Me to 21, died on Monday from complications following a double lung transplant.Jenna, 20, had pulmonary arterial hypertension - a degenerative condition that thickens the arteries in the lungs, impairing their functioning.She suffered from complications after a lung transplant in December and spent the past six months at Milpark Hospital, in Johannesburg.Groote Schuur Hospital pulmonologist Greg Calligaro said patients with the condition could develop heart failure "because of the heart having to pump against increased blood pressure in the lungs".By yesterday more than 5,000 people had registered on her campaign website and more than 20,000 as donors on the Organ Donor Foundation website as a result of Jenner's campaigning.Foundation spokesman Gillian Walker said there were about 4300 people in South Africa requiring an organ transplant...