I'm not negating the fear- a uterine rupture is very serious. However, there are risks involved with anything we do in life- including natural birth, VBAC or Cesarean. A woman needs to look at the research and come to her own conclusions- the decision that is right for her, her situation and her family- and not be bullied into a repeat cesarean because that is what someone else (including her doctor) wants.
http://givingbirthwithconfidence.org/2010/10/a-womans-guide-to-vbac-putting-uterine-rupture-into-perspective/