Haunted Marriage (entire book devoted to the subject)
The Courage to Heal (has a section on partners)
Those are the ones I have stashed at work. I have to admit I have not read them yet.
I have a number of others, however they are all focused on male survivors of abuse (cause I'm a dude). I'm sure their are other good books that would focus on partners of women survivors.
You may want to be discrete about this. It's hard to imagine what her reaction might be to finding you reading about this. She may rebel hard against the insinuation that she is "broken" or "different" (because, that is EXACTLY how she feels and she will resent that you see it too).
Me: 35 Her (WAW): 34 D8, S5, D2 T:16, M:9 BD + D: 4/3/2015 EA Confirmed 5/6/2015 Separation under the same roof