White People Adopting Native American

This is my first posting on this site, so I hope I am using this forum appropriately. I am making the same post in a couple of threads. I am currently working on a Cree reserve in northern Canada, and am interested in providing foster care and possible adopting a particular little girl. I am not of Native heritage, and do not have any other children. The child is 6 years old, and is currently living in an unstable foster home (her grandmother). I think that her family may be interested/open to having someone provide a stable home for her. They have no idea I am interested at this point. I have lived on the reserve for two years, and plan to live here at least another year, perhaps longer. I have learned a lot about the culture in my community and am friends with, and work with, many community members. It would be very important to me that this child would learn about and be involved in her Cree heritage. I do not plan on adopting her and then taking her away from her community and relatives forever. Could anyone give me some information of is cross-cultural adoption is possible in Canada, and what my first steps in inquiring into adopting/fostering this child would be - talking to a Social Worker? I have read the posts about the ICWA, and realize some people's opinion about this issue. I am concerend about this child and really want to provide her with a loving and stable home. I welcome any information, comments and opinions. Thanks!