This can be stated in active form. Alternate translation: "a woman who has been divorced by a man" (See: [[rc://en/ta/man/translate/figs-activepassive]])
This is an idiom. It means that her vows will remain in effect and she will be required to fulfill them. See how you translated a similar phrase in [Numbers 30:4](./03.md). Alternate translation: "she will be obligated to fulfill" (See: [[rc://en/ta/man/translate/figs-idiom]])