Found them.
The pertinent thread is "Footnotes: The Matriarch and the Red Herring" (which has lots of fun stuff about the Matriarch, in addition to Expat)
Here is the quote that kicks off a lot of other Expatriette-related material (from me, and I'm the first to admit that not everyone agrees with this theory)
I have a theory about Expat.
I'm fairly certain that she's got a hidden power, namely some kind of return-with-the-dawn regeneration ability. I think that in general, she might get stronger/faster/better/returns from being dead at night.
There are several instances (tactical shotgun, for one) where the artwork depicts her as VERY pale (and always at night). It could be stylistic, but it also could indicate that something else is going on.
Think about Flak Jacket for a second. It does absolutely nothing for small amounts of damage, and only works on big hits. In fact, it is one of the few things in the game that can take the biggest hits- an infinite hit, even- and leave Expat without a scratch. On the other hand, it is absolutely worthless against the few enemies who actually use bullets. Hired guns? No flak jacket. Voss's soldiers? no flak jacket. A full-on assault by Iron Legacy powered by grief, loss, madness, two rings, and covered in obsidian shards? Sure!
Here's what I think is happening. I think that she is actually dying (and it seems to be a regular occurence, seeing as how flak Jacket references getting her "this time"), or taking a mortal wound, staggering away (or passing out) and then (at night) she comes back to life. She then looks at her ruined Flak Jacket and thinks "These things work really great!"
A further hint might be her incapacitated side- she's down (and certainly looks out), but later on (in the Scholar's cards- proverbs and axioms?), you can see that same location and she's getting back up.
See, my guess is that her incap side is a major turning point for her. Its a time when she can't deny anymore that something weird is going on. The Scholar is helping her come to terms with who she really is (that being the kind of thing he does), and she's going to have to learn more.
I kind of have a theory that only Citizen Dawn's power can really put her down in any sort of real way- and thats why the scar on the missing eye is so vivid and raw-looking. Her innate power can't really heal it properly.
Now, I think that a HUGE amount of her skill and lethality is training, talent, and will. But I think that she's a lot more survivable than even she knows.
Story wise, I think it would be kind of hilarious if its not a story about the power-less daughter being driven from home, but the story of a daughter WITH powers being driven away by people who didn't understand them.
and
Well, the simple answer is that I'm wrong.
The slightly less simple answer is that they have several damage reduction cards that duplicate each other (Fortitude/Otherworldy resilience), and several cards that reduce massive damage (shielding winds, undaunted, superhuman durabilty)- each of them with the same trigger condition- something that hits for more than 5 gets reduced, and anything below that is unaffected. they could have gone that route. they could have combined them into a body armor card which granted both sets (kind of like undaunted), but destroyed itself afterwards. That would have been more realistic, and filled any sort of need to give her damage reduction.
But they didn't. They chose to give her a piece of equipment that does something NO other armor/shield of faith/alien skin/or powers honed through a lineage of heroism can do. It protects her (totally and completely) from hits that would leave Legacy broken and battered.
There is also discussion on glowing doves, why shotguns do more damage than eye lasers, and other potential hidden powers. Enjoy!