A.  Your wife has a problem called coccydynia. She should strictly avoid sitting on a hard surface. Instead use an air ring as a cushion till the pain is there. Dip the same ring in a tub of warm water and sit in it for about 20 min morning & evening. Avoid constipation, take a mild analgesic. If not getting better in a month or so will require local cortisone and manipulation under anaesthesia.