How Much Time Does It Take To Recover From Chronic Pancreatitis?

my sister in-law was hospitalized with cronic pancreatitus.her pancreas became infected and they put a stent in it to remove the infection pus ans blood.while they did that they found a mass near the area and she went into various complications, c diff. she was put on a vent and a tube in her nose to the area that was infected to take out the toxic fluids, they had to drain the infected area several times with a tube directly thru the stomache area(not sure exactly where) she was on morphine for pain in the hosp for 4 weeks and they told her that she needed an operation and it was extremely dangerous , she might not survive....she wanted to go home, and it s been almost 2 weeks she has stopped eating and within the past 2 days not urinating...hospice said her body is shutting down...how long does that take ? and can she recover?