One link to the Mashpee Wampanoag Tribe's past and another to its future are gone. Alice Lopez, 49, the tribe's housing department director, died unexpectedly at her home Sunday, while Laurie "Cal" Green, 91, a former tribal elder and historian, died Wednesday in Newburyport. Both tribe members' deaths will leave holes in the close-knit community, tribe members said. Lopez grew up in Mashpee and was an active tribe member her entire life. "I guess I look at her as a warrior," Massachusetts Commission on Indian Affairs Executive Director Jim Peters, a Mashpee tribe member, said. "She has been fighting for tribal rights since she was a kid."