I like the way DD's ladies are using every possible instituion to help Matt out.
Natasha --> Military
Del Toro --> Courts, Law, Judiciary
Elektra --> Organized Crime
And so forth...
But with that in mind, Milla represents two very crucial instituions -- the Government (she's a member of the City Housing Board, right?), and perhaps more crucially, the Ordinary Citizenry -- the people of Hell's Kitchen whose lives have been touched by DD in various ways (as seen in "Decalogue"). You can never under-estimate this factor, or reduce her role to just "moral support". The larger reading public are most likely ready to see Matt get publically flogged, but for the residents of his beloved neighborhood, I'm willing to bet they'd rally behind him, if the situation called for it.
Interestingly, there's still one woman in Matt's life who has yet to resurface in the current arc: Sister Maggie. (And we all know what institution she represents.)
Holy crap! Didn't know about THAT. Part of me is thinking, "Whoa, nelly! That's more characters than Matt -- or the reader, or Bendis -- can handle." But then I remember "Hardcore" and how well it brought together loose ends, so I'm cautiously optimistic about this.
I just hope that the end of Bendis' DD run will NOT tie up with New Avengers in any way. Sure, by all means, let a DD character (perhaps Matt himself) end up becoming Ronin. But let's not have the circumstances leading up to that depicted in the solo book. Not only will it be difficult to link to the ongoing stories, it's also grossly unfair to NA fans who aren't particularly interested in DD.