"Mm, he's here, looking for you, just as I was," Lily whispered, tightening her hold on him, prepared to cling quietly for as long as they needed to wait.
It turned out that wasn't long. Though the Patronus made no sound, Lily felt the return of the doe behind her just the same, then let out a relieved rush of air when she spotted the form of James' Patronus behind her own, the two quite the matched pair as they drew even with each other – the stag huge, heavily antlered and kingly, the doe deceptively delicate but just as regal, the queen to the stag's king.
The stag circled her and Harry, much how the doe had when Lily had found their son, then stepped toward the doe, neck stretched out, head extended as the doe mimicked the gesture. Silvery nose touched silvery nose and the Patronuses dissolved in unison.
Behind them stood James.
Lily, without letting go of their son, turned her head to face James and gave him a thoroughly shaky smile. "It's Harry. I found our son," the words caught in her throat, half-laugh, half-sob, "just not how we were expecting."