My wife got diagnosed with pancreatitis and she constantly in pain and is losing weight she's 22 years old and 90lbs what can i do to help her?

Avoid fat and meat: It sounds chronic (no quick solution) and you need to work with a doctor. Sometimes pancreatic enzymes are necessary. Weight loss may be because of malabsorption from inability to digest fats

Pancreatitis : She need to see a pancreas expert to have repeat cross sectional imaging and make sure she didn't develop a worse disease. This will allow to determine which intervention is required. Also you need to discuss feeding tube if she is not able to eat.