I think that a woman could use whatever blade she likes with no advantage or disadvantage. For the most part, the contact area with the leg will be a fair bit less than the length of the blade, and there is nothing to navigate around. These two points suggest to me that the type of tip will not matter.

As for blade thickness and grind, those are mostly about personal preference no matter what you are shaving, unless the hair is so coarse you cannot use a full hollow.

I shaved my girlfriend's legs with a full hollow, 5/16, square poind Torrey. I even pulled out some Rose scented Pirates Cove soap (got it in a lot, never used it myself, so hold the jokes). After one pass WTG the said her legs were smoother than she'd ever had them.