Ascites how to support spouse during this time

My wife has been battling with pancreatic cancer for three years now, she had the Whipple one and a half years ago and they did not remove the entire tumor, it is attached to the MSA. She said to colonoscopies where they repaired a total of five lesions and immediately after the second colonoscopy, she started showing a descended stomach and gained close to 20 pounds within one week. We recently went did you get it drained and they drained 4 L of fluid out of her stomach but she’s still descendent.. We are going to get a PET to see any metabolic activity in the assumption. Is that it spread, been on chemo for over three years and it’s been maintaining the tumor and a normal size for the last 2 1/2, but following our colonoscopy to two more starting to grow. All the her stomach has reduced. She’s still in some pain, she’s starting to show signs of edema and one for her feet and she is clinically depressed. She is only 59. Looking for encouragement words of advice on how to manage my wife’s mental condition as things start moving in the wrong direction.