The Great Gatsby, to say eagerly

I'd like to know the meaning of "eagerly" in this extract from the chapter Three of Gatsby:

“Sure I did. I was going to wear it tonight, but it was too big in the bust and had to be altered. It was gas blue with lavender beads. Two hundred and sixty-five dollars.”

“There’s something funny about a fellow that’ll do a thing like that,” said the other girl eagerly. “He doesn’t want any trouble with anybody.”

Thank you.