I think a lot of people are lashing out because they were dissatisfied with the ending (hey, I was too), but to somehow label Martha's departure as racist kinda demeans the actual fight against racism, here. I mean, the woman made her own decisions and did everything by her own terms. Where's the argument here? Can't we focus on the stuff that's actually stupid and possibly degrading if we're going to complain?

And seriously, everyone at the time was arguing that Rose didn't have enough free will in PotW (which I loved as well), but now they've shifted positions, apparently.

Conclusion? Fandom is silly. Once again.