Yes, puppies do get calmer as they grow, but some still need to learn to be calm. With a puppy, you can help by playing for 15 seconds, then pausing to let her calm. Try training her to associate a clicker with a reward. When she quiets between bursts, click and reward the calmness. Praise her quietly for being calm, then resume play for another 15 seconds. If she gets so revved up she won't calm, leave the room.