My wife's mother has stage 2 breast cancer. Very treatable. Nobody in family is panicking except her. She has been on a 5 day binge of crying several times throughout the day. She is afraid to lose her mom even know things are looking good so far. HOW can she stop ruminating so obsessively about her moms death. She was never an anxious person idk what is going on.....we all are giving support and she is just not being positive at all. Pls.help.