It Takes More than a Wand
"Probably." Hermione reached for a tissue. She hated crying in front of Severus but she seemed to do it frequently. "But I don't need you to fight my battles. Things were fine."
"I hardly call that fine. Besides, it's a husband's duty to help fight his wife's battles."
"Oh really? And why is that? Because I'm incapable of doing it myself?"
"I grant that you can fight battles against Death Eaters, manage to wheedle your way into time extensions on the Marriage Law, and the like but I have to say you weren't faring so well with this particular one."