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The article said that it's an injury but that's not true. It's a illness that makes her fatigued.
In any case, even if she started running again today I think it's too late in the xc season for her to be competitive at the national level like she was before and I don't think she's interested in being halfway decent this fall.
At this point it looks like xc is a no go for her. Hopefully she will be able to compete in track.