I cannot stress enough how important it is to get a young dog enough exercise. If she gets to chase a ball a bit at lunch, she is probably burning off a bit of the excess, but she is not really wearing herself out to the point where she will be good and tired when hanging out in the house with you. We say "A tired dog is a good dog" because a tired dog is more likely to be calm, lie on her bed, chew her toys, and greet you with gentle enthusiasm!
Do some activities to cause her to use the space she lives in (fetch, hide treats, play recall games, etc.). If she seems to be fine with other dogs off-leash, try to take her to dog parks or invite friendly dogs over for "play dates". Our local dog parks are listed here - but be sure to read the cautions.
Another option is a good doggy daycare (see the Resources page). I can *almost* guarantee you that a few days at a daycare will wear her out to the point where a lot of her problems seem to solve themselves! Please note that I said "almost" and "seem to" - you would need to step in and make sure that she finds her new way of behaving very rewarding and worth changing her old habits for, once the tiredness wears off! If your dog already attends daycare or visits dog parks or goes on walks, you could increase these temporarily as you implement training - a short-term investment for long-term payoff.
Give your dog more chew toys. For "legal" toys to chew on, I believe the best ones are those that reward the dog (with food as well as chewing pleasure) for chewing on them or interacting with them. This is the "kong" and a few other similar toys. You can see Kong "recipes" at http://www.kongcompany.com/
under "tips and advice". There are lots of similar toys on the market - for a sample, you can visit my favorite on-line store, SitStay – click on the “Toys” tab at the top. There are also toys that you can fill with her regular dry kibble but she has to work at them to get the food out. Some good ones include the Roll-a-treat, Buster Cube, Hi.Q., Tug-a-jug, TreakStik, and Tricky Treats Ball (see PetExpertise.com).
I truly believe that an early investment in extra chew toys will pay off, because you will save yourself from losing a number of other items (kids' toys, pool equipment, garden supplies, etc.). The investment is not just of money, of course; it's some time spent stuffing the Kongs (or other similar toys) with a few treats. I usually spend about 15 minutes once a week, mixing wet and dry dog food and spooning the mixture into 5-7 chew toys. I throw them all into the freezer, and each day over the next week if I need a chew toy I can pull one out. My dog is happy to take it even if it's still frozen (I think that adds to the challenge for him!). I might give it to him before I leave for the day if I will be gone a long time, or in place of breakfast or dinner, especially if I know my attention will be occupied and I kind of want him occupied, too.
More exercise will be a key to really making your dog a calmer, safer, more welcome family member!