Harry fidgets, then almost paces, but soon enough gets himself under control and decides that he needs to sit down for this. Gesturing to make sure Lily doesn't mind, Harry pulls up a chair before launching into it.

"I don't know how much Remus told you, because out of everyone here, I'm the only one that's made it to the end. Voldemort dies, eventually. I'd been fighting against him for about seven years when we finally found and cut off his spells that were keeping him alive." He's delicately stepping around the issue of horcruxes but hoping that it's enough to distract her from how many years he'd been at war.