Charles Ellicott Commentary 2 Kings 5:4

"And one went in, and told his lord, saying, Thus and thus said the maiden that is of the land of Israel." — 2 Kings 5:4 (ASV)

And one went in. — And he (i.e., Naaman) went in: that is, into the palace. Some manuscripts: “and she went in and told.”

Thus and thus. — To avoid repetition of her actual words.