I don't know where Gracie has been assigned but, if she were to drop out, or be replaced at say, Skate Canada, the spot would most likely go to a Canadian Skater.
IIRC, countries can't have more than 3 entries, so if Gracie were to drop out of Canada (or whatever GP she is assigned to), the replacement couldn't be from Canada. It would have to come from one of the top 10 skaters on the official replacement list. I think Amber, Courtney and Bradie are in the top 10, so it's reasonable that a Gracie withdrawal could get an invite for one of these ladies.
ETA: Gracie is assigned to China & France.
China: Gracie is the only American assigned, so it seems probable that the Chinese would want to replace her with another American. Three Chinese ladies already are assigned.
France: The other U.S. entry is Polina. France has only 2 French ladies assigned, so they could assign a third lady. But I don't think they have another who has qualified.

I don't have to come on and give first hand accounts of anything. I did so for the few here that actually appreciate it.
Wouldn't that be as much a killer for her confidence and mental state as attending the GP and flopping 
