1. I was going to also suggest the can of pennies
2. Be like his Mama-dog would be if she was acting up - put your hand on the back of her neck and gently hold her still, pushing down only a little, saying no. Keep her still there a few moments till she calms down. A Mama would gently put her mouth around the back of a pup's neck/scruff and do the same thing. This may not work at all, but worth a try as it may tap into their natural instincts
3. Have you tried a DAP Collar or plug-in (Dog Appeasing Pheromone)? These are available at Petco etc or online
4. If/when desperate, and anti-anxiety med, temporarily, may be needed; this may calm her down enough so that she can concentrate on using/learning her other coping mechanisms (chew toys, kongs etc). Anti-anxiety meds and some antidepressants are often used in this same way for humans
5. Have you tried a white noise machine? This is my absolute favorite one...I've used it for years and it gives a nice, even sound; it's not cheap but it lasts forever...think I've had mine 20yrs:
Amazon.com: Marpac SleepMate 980A...