This one's hard to call because I don't even know if Sasha's showing up, and no idea how she'll figure into the mix if she is there (since I haven't seen her skate competitively in a long while).
I think if she's not there, Rachael and Alissa, or Rachael and Ashley will get the two spots. I think Rachael's probably a sure bet, anyway. Ashley is rather inexperienced being a top dog, so it's hard to say how she'll handle the pressure, but it's also hard to say how Alissa will skate since she's so inconsistent.