Hi Befuddled
I hope everything is going better for you since you had to make a decision about whether to return to your counsellor. As someone who is in training to be a counsellor myself, I would probably feel if I were your counsellor that I had not achieved what I set out to do if you wanted to return to me after two years counselling, which is probably why they recommended that you see someone else. For me, the purpose of counselling is largely about empowering your clients to feel confident about trusting themselves and their own decisions and not have to depend on positive feedback or support from others (which might not be forthcoming). Obviously it takes time, support and lots of work by both of you (!) to reach that stage but maybe your counsellor felt that she had (inadvertently) allowed you to become more dependent on her than was good for you rather than empowered by her. I wonder if you took on board how much of those positive feelings you had for that period of time you mentioned, was down to your own efforts and not just down to the counsellor.
I hope you take these comments as not reflecting any criticism of either you or your counsellor, just a reflection on why she might feel that you would benefit from working with someone else, so that you can continue to grow and gain from counselling in a way that you can take forward yourself.