Lindsay informally tells someone that someone is arriving soon, indicating a sense of eagerness or anticipation. She seems to be addressing a situation involving this person and is possibly frustrated or joking about wanting to confront him physically.
Her comment about kicking him in the balls, expressed in a humorous and exaggerated manner, shows her frustration or strong feelings towards this person. The tone suggests playful sarcasm or a light-hearted attempt to cope with the situation in the context of the story.