It appears Elena and Liza are beyond reach for Ashley and Gracie, but the American girls should beat Anna.
I don't think Anna will place higher than #5 at the worlds.
I think anywhere between 3rd and 6th place is realistic for Anna (if she skates well). 3rd place I think is a fight between Ashley, Gracie, Anna, and Satoko. I don't think a US lady is locked for the World bronze like some others seem to. Anna and Satoko have less to lose, Ashley and Gracie will basically be trying to one-up each other AND hold off Anna and Satoko which is a lot of pressure, the way I see it they all have pros and cons.
Ashley:
pros - highest PCS of bronze medal contenders, best performer, comes in as US #1, impressive resume coming in
cons - most subject to edge calls, URs, 2foots, and low spin levels among bronze medal contenders. could find herself a ways back after the SP.
Gracie:
pros - second highest PCS of bronze medal contenders, high quality jumps, not UR prone, strong spins
cons - least consistent of the group, programs are not great, easiest FS jump layout of the group, history of cracking under pressure
Anna:
pros - high quality jumps, not UR prone, spins usually get levels, gaining momentum as season goes on, pretty consistent, high base values, pretty impressive resume coming in
cons - not the most animated performer, PCS variable and could hold her back, Russia #3 coming in, can be sloppy, smaller margin for error compared to Americans
Satoko:
pros - comes in as Japan #1, consistent, high base values, great spins
cons - can be UR prone, PCS could hold her back, jumps unlikely to get much GOE, smaller margin for error compared to Americans, less impressive resume coming in
So basically I think all 4 have a shot.