The Great Gatsby
The Great Gatsby, all radiantly
Could you please tell me if in this extract from The Great Gatsby the word "all" in the phrase "all radiantly" is constructed with "radiantly" or with "us":
“Why candles?” objected Daisy frowning. She snapped them out with her fingers. “In two weeks it'll be the longest day in the year.” She looked at us all radiantly.
Thank you;