Since she's already a mother, she shouldn't have got divorced in the first place. She must be tolerant and submissive to her husband, come what may, in order to salvage their marriage, even to the extent of accepting the Small Three (if applicable). After all, most JHBu are already used to polygamy marriage by their husband. It's very normal.
But then hor, since she sounded to pitiful, come to me and I'll try to rent her a room.