Doctor Chip and Doctor Y are currently offline to whom you were talking.
So i want to help you.
Well as per your previous replies,both experts have different opinions and i think she needs to be seen by nearby doctor in person for a clinical examination to rule out underlying possible cause-?Kidney infection??Disk problem.
Having said this,if it's not possible to see a doctor in such a short time then it is advised to her to continue Ibuprofen 400 mg to ease pain.
And keep ciprofloxacin in her bag and avoid it to take if she has no symptoms at the moment as it should be taken under a medical supervision to prevent any adverse effects.
Also she needs to keep some muscle relaxant ointment and a heating pad in her bag if she feels pain in back then she can do gentle massage with muscle relaxant and apply warm compresses on affected area.
She needs to keep herself hydrated with plenty of fluids and use only packed bottles during trip.
Even avoid lifting,strenuous physical activities which can aggravate her pain.
In case she develops pain,frequent urination,fever,burning sensation during urination then start ciprofloxacin.
However at last in my opinion,it's good to see nearby doctor before going to trip.
I hope this helps.
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