I don't know anything about eclampsia but I just wanted you to know that you are not alone & how sorry I am that you, Bitsy & those babies are going through that.
How sad that her babies wont be there. As a mom, I couldn't imagine. You & her will be on my mind. I hope everything works out. This is probably going to be harder for you cuz you will probably put yourself in her shoes. How could a person NOT.
I agree with you about not totally trusting your vet. Several years ago my female yorkie Suzy jumped from my sons arms and broke her front leg. After taking the cast off, we went home & she jumped again & rebroke it in the same spot. The doctor never made sure the bones were touching so they would mend & she had to have major surgery. I'm a little leary too.
Good Luck