Hanna and Haley are twin sisters- but they don’t look the Same, only similar. Joyce is their aunt and they stay with the Byers often during the summer, while will and Jonathan are traveling to Ashley Marin. Like an exchange. Joyce really really adores the 16 year old girls and loves them maternally. Both girls are popular but Hanna is more rebellious and funny and Haley is really really smart and also kinda rebellious at times. They drink often, smoke occasionally and break rules often. Joyce cares for them a lot