He looked at her sadly, she clearly was upset, but there was nothing he could do until after the party. “I wouldn't lose hope...” he said, walking closer, a tentative hand placed on her shoulder, squeezing it softly. “He is a too precious prey for them not to make it public that he fell...” Direct, cruel, but that was Severus Snape.
His fingers moved up her neck, delicate: “What you have to do now, is keep an eye on your son, we both know he's the real target... James will come around...” he muttered and tapped her chin. “You are stronger than this, Lily... don't disappoint me.”
And he offered his arm, he could be of support for now.