Hi Dtcal,
Welcome to the site and I am so sorry that you are here. I can offer you a little advice as I have read DB and DR, but I am new to the site and have only been DBing for about 6 weeks. Have you defined your short terms goals? Are they action oriented goals?
How far have you gotten into the book?
I would also suggest that you not pressure your W into reading it. I see 2 potential problems with it. First, she will not be open minded to any book that you force her to read. I know that was the case with my W, I tried pressuring her to read another book, not DR. Second, if she reads it, she may think that you are insincere in your actions and are just "playing a game" to win her back.
It sounds like you are doing a lot of the right things. Your W is noticing the changes, but may not believe that they are real. As far as the trip to CA, I cannot offer any advice there. I will let that be handled by one of the veterans.
Stay positive and you will get through this and be a better person in the end!