She needs professional help. And you guys need to decide asap weather or not you want this baby. I don't know the law where you are but it may or may not be too late for an abortion. I myself suffer from bulimia anorexia. I however don't have kids but besides the actual birth, I fear of getting fat while preg. Selfish? Yes. But it's part of the disease! You say she's lost weight but you have to understand that she is most likely also suffering from body dysmorphic disorder so when she looks in the mirror, she sees something completely different. I honestly can't imagine how stressful this is for you both. But like I said, she needs professional help and fast.

Dx: BP2, PTSD, bulimia/anorexia
Seroquel 150mgs
Risperdal 4mg
Trileptal 600mgs
Buspar 45mgs
Ativan 1mg PRN
Vyvance 70mgs PRN