I have read that the nose-tip rotation for a woman should be 95-105. I have also read that it should be 105-115. Which is right?

The answer depends on many other factors, such as size of the nose, facial features, harmony of the structures, ethnicity, and the patient's goals.  IN general, I would consider 105-115 to be too much, though I could see specific instances where it might be appropriate.  

Hello and thank you for your question. Rather than an exact degree of the angle, it is much more important that the tip rotation fits with the rest of the face in a natural appearing manner and not to over-rotate the tip in surgery.  Make sure you specifically look at before and after
pictures of real patients who have had this surgery performed by your surgeon
and not just a computer animation system. The most important
aspect is to find a surgeon you are comfortable with. I recommend that you seek
consultation with a qualified board-certified plastic surgeon who can evaluate
you in person.
Best wishes and good luck.
Richard G. Reish, M.D.
Harvard-trained plastic surgeon

Angles you mention are only ranges that are quoted in the literature.  What is right for you really depends upon your goals. You should be seen in person.