I suspect that’s a reporting difference, not an occurrence difference. Very few lesbians would choose not to report such an incident, whereas a lot of wives and live-in girlfriends of male partners accept domestic violence and let it continue as regular feature of the relationship. Most lesbians are steeped in feminist philosophy, which is very heavy on the unacceptability of domestic violence or any violence. Also, a lesbian is less likely to be financially dependent on her partner, or to have children that she can’t afford to support alone. Many heterosexual women allow domestic violence against them to continue because they don’t know how they would support themselves or their children alone (and their violent partners often encourage this line of thinking).
BTW, I can’t figure out what on earth “stalked by a marital/cohabiting partner” means. How can you be stalked by somebody you’re living with?
You're certain steeped in the worldview. Have you considered that reporting such a thing would reveal their sexual preference?
Your suspicions do not come close to negating statistical evidence, as much as you might like that to be so.
And, as far as your bizarre inability to figure out how a live-in or spouse can stalk, you're being deliberately obtuse. What is being followed or otherwise monitored while outside the home, if not stalking?
Take the more statistically typical male aggression, combine it with female vindictiveness, and there you go. Lesbians beating the crap out of each other, workplace shootings, murder. Denying it doesn't make it go away.
Now, if Janet Napolitano would just go away, the homeland would be much more secure.