The tone of Kim Dana Kupperman's i just lately started buying wings can be described as

warm but distant

warm and spiritual

warm and passionate

warm but proud

warm but distant

Explanation:

Kim Dana Kupperman's I Just Lately Started Buying Wings is a collection of essays that describe the various experiences that Kupperman has had throughout her life. She writes in the form of "missives," and outlines several different experiences, such as the loss of her brother and her difficult childhood. Throughout the collection, her tone could be described as warm but distant, as she provides vivid descriptions of the events, but is able to do so from a distant perspective due to the time that has passed.

Warm but distant because he just started buying them but sound a little shy.