Paranoid,
This is normal and your symptoms will be different from others. It will pass :) If it lasts longer than expected then make sure you check with your doctor to rule out anything medical.
You can only share your experiences with your sister. You journey is a hard one and it will benefit you greatly in the end. Practice what you are preaching and keep telling her it is not good. It is a hard situation to encounter, just be her support and kindly show her the way.
Keep Strong,
Josie
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The SSC Support Team.