It sounds like your therapist hasn't been very clear, that you were having to figure out or assume the meaning of what she was saying. Have you had a chance to clarify with her and ask her exactly what she's saying?
One of my very biggest fears in therapy is that if I talk about the biggest emotions or some of the most intense worries and fears, I will do or say something, the therapist won't like it, he'll end our therapy relationship, leaving me all alone to try to cope with things too big for me to cope with alone. Your posts, @Lsswwdictb, sounded similar. You are feeling rejected by someone who you feel is helping and whose help you feel you need. Is that right?
I have a fantastic therapist right now that understands my mind better than anyone I know. It took me two years of weekly therapy before we started talking about this fear.
I've had a lot of bad experiences with therapists. @BeyondtheRainbow is right that sometimes a therapist is unable to help the patient anymore. It isn't the patient's fault or failure, just a maxing out of that particular therapist's abilities. My first therapist told me we needed to stop meeting for a while. While I was meeting with all these therapists, I thought they were helping most of the time. It wasn't until I left and found a truly good therapist that I was able to see that they weren't helping at the time. I wanted to believe they were helping.
I'm not saying that your therapist isn't helping. I'm saying that though it will take a few tries, you may find someone with an even better fit, someone you can trust won't tell you to leave.
I've talked to my therapist about my own worries. "I'm still in therapy after 7 years. 7 years of nearly weekly therapy! I'm a failure. I should be fixed by now." (It was me worrying about stopping therapy, not my therapist like your therapist was.)
My therapist said what @gina_re said. For situational depression and anxiety, therapy can often be temporary because they are able to work on the situation and coping skills and the person is able to function again. Bipolar, on the other hand, is a lifelong illness. Therefore, it needs lifelong treatment. It's okay if I've been in therapy 7 years. If therapy is still bringing me some benefit, then I ought to keep going. If it isn't helping anymore, then I ought to stop.
That's what my therapist said, and it felt true for me. It's okay if you need a therapist longer than a few months. If your current therapist doesn't believe that, then you will probably feel more supported by a different therapist.
I'm sorry you've been feeling worse. Issues with the therapy relationship send me into huge downward spirals. I'm really sensitive to that relationship. It's quite intimate (not sexually) because we are talking about our deepest fears, worries, secrets, and struggles. I feel safe with my current therapist, and that is crucial to me actually being able to make progress.