Have a 10 yr old yellow female lab. Has always had separation anxiety since she was a pup. In the last 3 months she is suddenly afraid of thunder. Of course the last 3 storms have all come through in the middle of the night. She is trembling and shaking and whining in fear and evening barking in fear. Have been hunting over her since she was a pup. Went out Saturday goose hunting and had no issues shooting over her. Not sure what to do with her. Any suggestions?