A/N: SPOV
"You are a powerful witch who is dealing with self-doubt. Your strength and your conviction will be much stronger than this. Take all of those problems you see and file them away. Restore your calm room to how it first appeared. Clear your mind of all this."
Severus' head was right above hers, willing his own force of will to assist hers in this. Her scent hit his senses, and he let his hands gently ran down to cup her shoulders reassuringly.
"You've proven your strength and your conviction at the Department of Mysteries last June. Lucius remains in prison even now in part to your heroism.
"So banish those thoughts that have been plaguing you. Don't let them have that power over you anymore. I am here with you, and there is nothing that can defeat us if we put in a little hard work." He hoped that citing her house's tenacities would help her.
"Now clear your mind of all that rubbish, hold onto whatever you find dear in there, and make your hair that insufferable shade of pink that I've grown accustomed to seeing on you."