My larger concern was her answer. Respect is clearly different from submission. Bachman gave a political answer and not a correct Christian answer.
Submission clearly involves respect. She respected the council of her husband. Submission demands respect on the part of both husband and wife. The husband needs to respect the wife to the point that he wouldn’t make demands that were not in concert with love and support. Biblical submission does not portend to derision or abuse but more of respect for ones partner. I would submit that Biblical submission does indeed mean respect.
It was ostensibly a political debate, there was not enough time allocated for her to go into a detailed theological response and had she done so, it would have provided all sorts of political fodder (particularly for opponents on the left) for the rest of the campaign. The question was better suited for a one-on-one interview where she could have given more of a "Christian answer."