You can't expect her to read one book and then its all better. You CAN expect her to let the topic die again if YOU never bring it up again. You have to do what I suggested many posts back: You initiate the same conversation again, you listen to her cry, and you ask her for a real answer. Will you join me in fixing this or not, yes or no? If she says she doesn't know, she needs to think, then you say OK, we will talk again in one week and see how you feel. If at that talk one week later she tries to blow you off, you reiterate that you need an answer. You repeat this process over and over until you get her yes or her definite no.
All your advice is good, I can see that. And I hate to seem like a verbal brick wall, but here's the brick wall I've come up against in the past. If I try exactly what you suggest, the essential element being persistence, she avoids giving an answer by increasingly stating that my "sexual harrassment" of her on this issue (and she's used exactly those words when our relationship was rockier on this matter in the past) is making her hysterical and feeling unsafe, to the point where she's going to have to leave the house for a while. I know, it's crazy.