Far from diminishing her appeal, a woman's interest in theology ought to be the first thing to catch a man's eye. A wife's theology should be what a husband prizes most about her. He may always enjoy her cooking and cherish her gentle ways, but in the intensity of battle, when adversity flattens him or he faces an insurmountable challenge, she is the soldier nearest him, and it is her theology that he will hear. A woman's theology suddenly matters when a man is facing a crisis and she is the only one around to offer encouragement.
Lane Keister's Message to Women was eerily timely, given my current read. He also followed up his Message to Women with an added list of resources for beginning a study of theology, for men or women. I encourage you to peruse both posts, both of which are short in length.