Gauging Interest - Rogue with a Cursed Ring

[LK]

If you are interested in doing it, shouldn't that be all that matters? Why is interest from others an influence in how you spend your time?

While having someone be the primary driver in the progression towards some transformed state is interesting and good subject material, what would compel the character to use a cursed ring with such an obvious detriment on her long-term well-being? If she wants people to fear her, wouldn't turning into a half-pint have the opposite effect? Or is that her story -- that she has to learn to lose that as it becomes physically impossible to intimidate.

A ring of growth that increases her size with every spell used would seem more complimentary, but that would eventually reach a point where the character becomes a true villain.