Can you put her in the car awake and go to the pickup early so she sleeps in the car and can get a longer rest before you go into pick up your other child? If she still sleeping when it's time to go into the kinder,you could call the kinder and organize for one if the parents that you have authorized on your child's enrollment form to collect your child and bring them out to your car for you. That way your older child gets picked up on time and your younger child gets the rest they need.