Based on the wording on Blindfighting, a person cannot use non-attack abilities, including defenses. Is this a correct interpretation?
Blind Fighting
This ability allows the character to use Attack (Melee) abilities and make weapon attacks while Blind.
Continuous
Blind – The character cannot see. She may move no faster than a walking pace, and she may not use any abilities except latent effects and those that are delivered by touch. A player of a blind character should ensure her out-of-game vision is not obstructed in any way.