She helps him save Earth from the galactic police force the Atraxi , and when he returns two years later she begins travelling with him as his companion .
When the Doctor returns , Amy is nineteen years old and working as a kissogram .
Amy helps him save Earth from the galactic police force the Atraxi , and when he returns two years later Amy begins travelling with him as his companion .
When the Doctor returns , Amy is nineteen years old and working as a kissogram .