TUCSON — Gabrielle Giffords looked slightly stricken as she considered the question: Would she feel bad about appearing in a political advertisement against her former House colleagues who declined to stand with her on guns? ‘‘Yes,’’ she said, it would be painful.
“Sometimes you have to do things that are hard,’’ said Mark E. Kelly, Giffords’ husband, as she tucked herself close to him on their couch. Giffords nodded, as she often does when Kelly— as he often does — intuits the many thoughts she is still unable to express fully. ‘‘Really hard,’’ she added.