Textbook oxalate-dumping. Here are some resources to learn more - basically her body is flushing out all those plant toxins it's accumulated. A great sign! If the symptoms get too bad, some people temporarily reintroduce small amounts of oxalate-holding plants (berries, dark chocolate, spinach, etc.) during that dumping period to smooth out the detox process.

https://whycarnivore.com/#OxalateDumping
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