VWD can be hard to prove with the blood tests because many things make the Von Willebrands Factor (the protein that is deficient) go
up and down, so false negative tests are common. She went to see a hematologist with this history and her blood tests were low normal. She was told that not only she "Absolutely Did NOT have Von Willebrands, but that the doctor doubted her family history."
So now she's in a hospital with her knee still draining blood 48 hours after surgery.