en_tn_condensed/act/16/19.md

her masters

"the owners of the slave girl"

their hope to make money was now gone

Here the word "hope" is the reason for which a person can expect that what he desires will happen. Now that the spirit was gone, the girl's masters could not expect to earn money from the spirit's telling people things. Alternate translation: "their opportunity to make money was now gone" or "they could no longer expect to make money" (See: rc://en/ta/man/translate/figs-abstractnouns)

their hope to make money was now gone

It can be stated clearly why they no longer expected to make money. Alternate translation: "she could no longer earn money for them by telling fortunes" (See: rc://en/ta/man/translate/figs-explicit)

into the marketplace

"into the public square." This is a public place of business, where buying and selling of goods, cattle, or services takes place.

before the authorities

"into the presence of the authorities" or "so that the authorities could judge them"