Cobel has been highly invested in Mark. Last season, she basically proved out what Drummond proved this season - that they showed no emotion and no personal connection, the two spouses put face to face; this time, it was Gemma only, showing no emotion in the face of her miscarriage. But Cobel did it covertly, and wasn’t sharing results with the company (yet). She’s helping Mark for now, but I suspect she orchestrated Mark and Gemma’s entire hell 2 years back. She feels guilt, and she worked and lived with Mark. Complex emotions. But she probably genuinely cares in her twisted way.