Try super-gluing her knickers to her crutch. When you rip them off you will find that she's as smooth as a billiard ball. I promise it won't irritate you one bit!
Im not sure if you can get this product in Jamaca or not but you must have something like it there. They are called depilatories. Its a cream you apply to the bikini region or under arms wait a set # of mins and rinse off. All or most of the hair rinses off. They usually smell odd and there are some precautions to take. Read the label carefully!! Don't get too close to here pussy . If you can't find this stuff at the pharmacy then just go to one of those Hedonism resorts that are in Jamaica (I think). You will find an abundance of naked cunts there that will help you out. Or you could just try shaving. Carefully trim most of her bush with sissors then use some good quality shaving cream (Gels are the best) and a sharp disposable razor. If no shaving cream handy soap works good too. Shave WITH the grain!!!
The first few times my husband shaved me I got some razor irritation. After I started doing it myself and regularly, it stopped. Make sure you use a very new razor. Lots of shaving lotion(cream) or soap. Go with the direction of hair at first to get most of it off. Resoap or more shaving lotion (cream), then go against the direction to get a smooth shave. I usually put some body oil on after. Good luck. It just takes some time to get used to it. She needs to keep it up because the irritation is probably ingrown hairs.
Hope this helped a little.