Non-hodgkins lymphoma...pancreatic enzymes

Hello, My grandmother Susie was diagnosed with Non-hodgkins lymphoma in 1998.She has been doing an intense herbal regime for the last 5 years with good results.In Sept. she had a mild heart attack and last week she was hospitalized for fluid in her lungs....They removed 3 qts.They attribute this to the cancer.Can anyone tell me why fluid would fill the lungs, anything to help slow down this happening again, and good natural treatments for non-hodgkins lymphoma...Also, has anyone ever tried pancreatic enzymes for cancer?or strong poultices?Thank-you so much!Penelope Tweet