No real reason to hate her. The problem is 1, her upbringing. She was the shy and conservative type, and never given the chance to let loose for the most part. Top that off with being groomed(?) to take over the grandmothers company, or her own expectation to, it gave her very little growth room for romantic relationships.
Anyways, no real reason to hate her for it. Tho I am often disgusted with how she refuses him even after they got married very early on.