Linda Hogan "Bush's Mourning Feast"

I found this story kind of confusing. In the beginning the great-granddaughter is cooking and she says she can sometimes hear the voice of her great-grandmother, Agnes. Then the speaker shifts and the font is italicized. This is the voice of Agnes speaking. She talks about Bush, who is the wife of her son Harold, and Bush's mourning over losing someone the speaker addresses as "you." I am guessing this "you" is the great-granddaughter that Agnes, the speaker, talks to. I am not completely sure why Bush and the other company is mourning, but I think it is because the child is being taken from the reservation and put into one of the boarding schools. The speaker also mentions Bush's spirit is bad and cannot be saved. She explains this by explaining a dream where she saw Bush under the frozen lake, meaning that her heart was frozen and could not be thawed. I suppose this is because Bush feels lost and helpless after knowing that the child is going to be taken from her. I really liked this story because of its imagery and detail, but I cannot seem to figure out the family tree. Agnes is the speaker and the great-grandmother to the person that is cooking the meal in the beginning. The person cooking the meal is the child that was taken from Bush. And Bush was the wife of Agnes' son Harold. So I would assume that the child is Bush's daughter, but this is not explicitly stated in the text. Again, I found this story confusing but very enjoyable.