No it's really not. Let's say hypothetically the danger of a lone woman being murdered in a remote area is 1 in 100,000 and the danger of a woman being murdered by her partner is 1 in 10,000.
The fact that you are statistically more likely to be murdered by your partner than a stranger doesn't affect how dangerous it is to walk in a remote area. It's still 1 in 100,000.
Sadly there have been quite a few instances of, particularly lone female dog walkers, being murdered in the last few years. Let alone women being sexually assaulted.
The level of domestic violence/murder has absolutely nothing to do with how likely you are to be attacked as a lone female in a remote area. Except that it demonstrates just how dangerous some men are.
I personally do not feel safe walking alone in remote areas. If you do, great. But trying to convince me it's safe to do so because of how many men kill their partners is neither logical nor persuasive.