Emma Yang had become increasingly frustrated trying to communicate with her grandmother suffering from Alzheimer’s disease. The teen had a hard enough time keeping in touch because of the distance between her home in New York and her grandma in Hong Kong. style=”display:inline-block;width:300px;height:250px” data-ad-client=”ca-pub-8420654331411867″ data-ad-slot=”1313712966″> After the elderly woman forgot Emma and her dad’s birthdays, the…