I like to hc that Amelia is a pretty smiley child, especially with prre-death William as a parent.
After her mother died, William would do anything to make Amelia smile.. ^^
After a few months of convincing, Archangel relents and lets William 'preen' them, and goodness are they soft... And Archangel feels something warm bloom in his chest..
So they have a bi-weekly wing 'preening' session (though it's more of an excuse for William to touch them...)
While Archangel's wings dont need preening (he's a supernatural entity after all), William still insists in doing so (thinking Archangel's wings are similar to a bird's)
Archangel's hesitant at first, his wings are a gift by God Himself.Letting a human taint a Heavenly blessing?
Archangel likes to mess with William by wrapping his wing around him.
Like.
William's trying to do housework and Archangel suddenly appears and his wings block William's vision