Thanks for the responses!
tkinsley, good link for some basics for me to understand better this lady's condition.
twixxi, I'm so glad you posted! She is signed up to do our detox diet in january so perhaps we'll find a guilty food. Would you mind sharing your trigger foods?
Aoeifi, I'll ask her about swimming. Sounds like a logical solution.
This woman said she would invite anyone who can help her find relief to dinner. I'll let you know when to start making plane reservations.
Salut,
Kaisa