Here's some relevant info from Anabolics 2000 re: Proviron & women:
"Although this steroid is strongly androgenic, the anabolic effect of it is considered too weak for muscle building purpses.
... Among athletes, Proviron is primarily used as an antiestrogen.
... This drug is also favored by manu during contest preparations, when a lower estrogen/high androgen level is particularly sought after. This is especially beneficial when anabolics like Winstrol, Oxandrolne and Primabolan are being used alone, as the androgenic content of these drugs is relatively low. Proviron can supplement a well-needed androgen, and bring about an increase in hardness and density of the muscles. Women in particular find a 25 mg tablet to efficiently shift the androgen/estrogen ratio, can can have a great impact on the physique. Since this is such a strong androgen however, extreme caution should be taken with administratin. Higher doses clearly have the potential to cause virilization symptoms quite readily. Fr this reason, females will rarely take mre than 1 tablet per day, and limit the length of intake to no more than 4-5 weeks.
...[because of its anti-estrogen properties] ... Proviron should noticeably benefit the hardness and density of muscle, while at the same time increasing the tendency to burn off a greater amount of body fat.
Proviron is usually well-tolerated and side effects (men) are rare under doses under 100 mg/day. ... Women should be careful around Proviron. It is an androgen, and as such as the potential to produce virilization symptoms quite readily. This includes, of course, deepening of the voice, menstrual irregularities, changes in skin texture, and clitoral enlargement."
The bodyfat loss speedup and muscle hardening sounds really great, but remember - the context of this statement is relative to "hardness" as in BB contest prep - not "toning" for a cute little beach body.
Hope that helps with your decisions.