A former boyfriend said she had been known to act rashly when love did not go her way.
After she separated from her second husband, Ms. Graswald moved in with a new boyfriend, Mike Colvin, a D.J. and former radio host in Dutchess County whom she had known for only three weeks. She arrived with scores of items belonging to her former husband, including a television set, wall hangings and even paper towels.
“She had wiped him out,” Mr. Colvin said. (A court later ordered that they be returned.)
When she and Mr. Colvin broke up in early 2010, he said they fought over custody of their cat. Ms. Graswald wanted it; Mr. Colvin resisted. “I didn’t trust her,” he said, calling her irresponsible. So Ms. Graswald lay down behind his car, he said, to keep him from leaving. At that point, he said, “I was like, ‘Take the cat.’” (She returned the animal a few days later.)
Still, Mr. Colvin said he did not think of Ms. Graswald as dangerous. “The two episodes certainly were outlandish,” he said, “but there was nothing else that would raise eyebrows.”