Tiger Lily

I know that a lot of people are upset about Tiger Lily and I know that she is completely racist in the original Peter Pan film as well as the book.  There is no arguing that point.  I am about to say something that is not entirely appropriate and I apologize.  I am a little confused.  Clearly the original Tiger Lily is based on conceptions of Native Americans that are neither accurate or fair.  I would just like to discuss the fact that Neverland is not America.  It is another world that does not necessarily have to subscribe to racial boundries in the same way.  Is it possible that casting Rooney Mara was a quest to divorce the character from her problematic past, by making her unique to the island.  I think that it can be asked that was there not anyway to do that or something similar with an actress of color, specifically a Native American one?  I also know that I don't truly get to weigh in on this issue, because I am not directly affected by it.  I cannot understand what it is to be a Native American in this country.  Not truly.  I just have a hard time wrapping my mind around this particular issue, but I am attempting to respect those with more knowledge than me.