If you have some concerns about where your therapy is going, that is a really good thing to talk to your T about. My T has always told me his goal is that I be able to walk away from therapy one day and he keeps a pretty specific focus toward that goal which helps me because I generally feel like I know where we are going. I don't know how long it will take to get there, but infinity is not the goal.

As far as the twice a week sessions go, you really just have to decide if you can even afford it. That would have to be first on my list whether I like it that way or not. Then, you have to decide how your therapy my benefit from more time each week. I suspect your T is trying to help you get past the silences that are taking up time at the beginning of each weekly session and she seems to be recognizing you have much more on your mind than you are able to get to in one session a week. Remember, these probably wouldn't need to go on forever; just until things are feeling more settled down topic-wise.