It makes complete sense that you've grown attached and accustomed to having your therapist in your life. The therapeutic relationship is very powerful and intimate; it can be even more confusing when your T acts like a friend. I think a great new therapist could help you work on healing from your relationship, however, it will take time. I hope you find a trustworthy, boundaried therapist who will be there for your as your "secure" base.

From what you have posted, your therapist seems to have an unhealthy attachment to you. I don't say this to scare you, but so you can be prepared...I think your therapist will make it very hard for you to let her go. She might try to rationalize her own behavior (as she has in the past), tell you this is "resistance" and a sign you need to keep working together, tell you you are still "not well", etc., etc. She might feel abandoned and want to take it out on you. I hope I am wrong.

Remember that as a client, you have the power to walk away if this is what you want/what you think is good for you (even though it is extremely difficult and painful).

Best of luck. Trust your instincts.