Recent Developments on the Criminalization of Abortion in South Dakota

The Los Angeles Times is reporting that opponents of South Dakota's criminalization of abortion have begun a petition drive to overturn the statute by way of a voter referendum.  See Initiative Targets Abortion Ban

Meanwhile, Cecilia Fire Thunder, the President of the Oglala Sioux Tribe on the Pine Ridge Reservation in South Dakota and a former nurse, plans to establish a Planned Parenthood clinic on the Pine Ridge Reservation stating, “To me, it is now a question of sovereignty." See Giago: Oglala Sioux president on state abortion law

I know absolutely nothing about Native American law but I hope this means all women, not just Oglala Sioux women, can receive treatment at this clinic. If non-Native Americans can gamble at casinos owned by Native Americans, why shouldn't the same be true for clinics?