Sounds like your T is trying to get you to really make a decision about whether you want to keep living this way, feeling like the scapegoat in the family or whether you are ready and willing to make some hard decisions and difficult changes that should empower you and improve your sense of self-worth and value. You are going to have to really commit to real change before she can help you see the way clearly, and I wonder if she's really feeling that level of motivation from you.

Perhaps those last few sentences are what you need to share with her. If you are ready, say "I am miserable living my life feeling the way I am feeling, and I am ready to fight my way through this. I just don't know where to begin. Can you help me find my way?"