Capriati is not known for faking injuries to get time-outs and using toilet break tactically. *cough* except Oz final *cough*
The injury occured after the first set yes. No need to questions it's legitimacy seeing as (a) you don't know because (b) it wasn't your foot.
Jen won't blame her loss on the injury, she doesn't do that.
and where they produce desolation, they call it peace