Sentence:  Amelia thereupon taught Ginger Park and Lucy. [...] In one picture Amelia and three friends—Katherine Dolan (referred to as Dolan), Lucy (Toot), Virginia Park (<WSD>Ging</WSD>) are lying on their stomachs, their chins cupped in their hands, staring at the camera either before or after a basketball game; it is Amelia who is holding the ball. 
Meaning of the word marked with <WSD> tags:  A diminutive of the female given names Ginger and Virginia.