Alacrity

From Tennesee Williams' "My Little One":

My little one whose tongue is dumb,
whose fingers cannot hold to things,
who is so mercilessly young,
(s)he leaps upon the instant things,


In her case, yogurt.

Serial, Cereal

What if growth isn't just diet or proficiency or knowledge or fitness or skill, or replace all those ors with ands? And what if it is also the composite of the time you spend doing them, and getting really good at spending time doing them? Like sitting on your grandparents' lap.
Olivia is seen here growing into the laps of the Grandparents Vande Berg. Getting good at spending time doing it.