Definition of "appreciating"

Gentle, affectionate, full of those small courtesies so endearing in daily life, generally silent, but such an appreciating listener, so unworldly, so young, and so lovely—Emily attached those with whom she lived, more than themselves suspected.

1831, L[etitia] E[lizabeth] L[andon], chapter X, in Romance and Reality. […], volume III, London: Henry Colburn and Richard Bentley, […], page 211

There are so many underlinings, so many exclamation points in the margins, and so much highlighting from my many readings and appreciatings that it looks like a case of severe book abuse. It is not; these are marks of love.

2005, Theodore Cheney, Getting the Words Right, page 238