I think she needs to see what she will be losing by choosing D. You get close to it and she sees so she tries to exhibit more control over you and then you're right back to where you started. Remember DB is the opposite of what you think you should do.
Right now she's not feeling like she's losing you - she calls, you ask about her day, basically it's more of the same of having a H but not living together and getting to date another man.
