I found a lot of between session anger at my therapist didn't play out like I expected next time I saw her. In person it became much easier to talk to her as another person than just be in my head with my hairbrained anger :-) "Using" your anger to talk more can be a good thing. I know you feel like sulking/being cold but I'm sure you don't really want to behave that way as it defeats the purpose of therapy?

Why does your therapist have to suggest twice a week? Why can't you ask for it? I guess though it depends on how well you'd use it? If you just "want" it because it feels good, that's one thing but if you talk too much (Me :-) for 50 minutes worth and are working hard at it, why not?