Hi estee, you know...it was interesting to read your post. I've talked about this with my T, and she says it's ok to be "too attached" to her. I told her I'm afraid that she'll abandon me or just disappear in some mysterious way (yeah like that would happen?) and it's only when I can depend on her, trust her to a 100 per cent, talk about these feelings....let her be close...that I can heal. This is the truth in my case... So maybe it will be easier if you can discuss it with her? I believe this is very common and that maybe she's heard it before? And besides, it only shows what a great inpact she has in your life and how much you love her, right? Nothing wrong with that.... and she can then help you in the future with abandonment issues.
Good luck and keep thinking the good thoughts