My friend was induced at 38 weeks. They had been monitering her since 30 weeks because of growth issues. Her little boy had stopped showing any signs of growth in the couple of weeks before so they decided to induce. They started induction on the Wednesday and he was finally born on the Friday afternoon. He was 2.1kg when born. They found that her placenta had started to die and figured that was why he had stopped growing. He thrived once he was out.

Good luck to your SIL.