Though appreciative of her husband's loving words, Narcissa, for quite some time now, had found them inadequate without action. She hid her own frustration for his sake.
Her voice dry and controlled, she inquired, "Pet, would you trust me to speak to Severus on my own regarding this matter?" Her tight grip on the locket betrayed her true feelings. What she wished she could ask for was permission to hex Snape (and thus her resulting nausea) into merciless oblivion. ...Thankfully for everyone, she had more tact than that.