My daughter in law is 6 1/2 months pregnant, has been for years. Had a period for 4 months last year then she got pregnant. Has not gain any weight. Has very low protein, if not all. Had to be given some in her IV. Doc said is going to...

My daughter in law is 6 1/2 months pregnant, has been for years. Had a period for 4 months last year then she got pregnant. Has not gain any weight. Has very low protein, if not all. Had to be given some in her IV. Doc said is going to be a major disaster if she doesn't start eating right. Legs and ankles are swollen. She won't listen to anyone. Doctors and nurses told her baby is number one. She replies I am number one. Scared to death about her and the baby. Been researching on the internet and alot of things can happen even if someone that has been bulimic for years even gains weight thru their pregnancy. No one can get thru to her. I lost my 1st child thru no fault of mine when I was 6 months pregnant 32 years ago and I can't understand her taking better care of herself. It's a little innocent baby with the possibility of having major health problems or even death not only to the baby but to my daugher in law too. I am at my wits end. She won't listen to anyone, her family, my son, doctors or nurses and has only gone to a psychiatrist only one time during her pregnancy. Has anyone ever went thru this or experienced this from someone that was bulimic and can these things actually happen with no protein and low potassium? The doctor said this is only the beginning, the signs, the symptoms of a major disaster if she doesn't change. He also said if your legs and ankles look like this then what do you think your babies look like? She wasn't even showing at 6 1/2 months pregnant just until her legs and ankles starting swelling, then her tummy look a little bigger but not that big. I am so worried!!