Hi, I work offshore on the oil rigs, I also work land rigs currently in Saudi Arabia. What I have found is that I can readily get my hands on needles, and even insulin. The issue I have found is hypo treatment gels/gluco tabs etc are hard to come by maybe religious reasons etc...
however saying that I have never had a need to use the facilities. Be wary every country is different it may be worth taking a medical document or letter from your doctor stating medications etc that way you can always get a translator or eve a foreign doctor as most will speak fluent English and any issues can be sorted...
She will need special travel insurance and you will probably find you will not be entitled to state help from the country your travelling other than your travel insurance but be clear with your insurance on length of stay to avoid any large medical bills should you need to use them hopefully not.
Congratulations on the opportunity and all the best