Oh that is worrisome. Perhaps she is just worried you are going to take her someplace and leave her again(?)
Has she been checked over completely by her vet? Possible timing was a coinsidence and it had nothing to do with her "visit". Sorry can't be more help, but best wishes!
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"I do not at all understand the mystery of grace-only that it meets us where we are but does not leave us where it found us"-Anne Lamott |