I think such strong attachment can be a necessary part of therapy for some people. I see it as being part of a process, and having that security at this stage in the process is important in order for healing to occur.
It may feel like you will feel this way about your T forever and that's probably a scary thought, but actually I think you will get to a place where you have been able to internalise that support and care and tap into your own emotional resourcefulness.
It's a little bit like how typically a child grows into an adult and gradually needs their parents less.
This natural inner resourcefulness has sadly been thwarted by your traumatic experiences, but it is still there. You need long term support to tap into it, and I think you and your T are working on that.
I want to say, be kind to yourself. You have been through so much and it is likely to take a long time for healing to take place. Your feelings are okay, and perfectly natural. I hope you can continue a dialogue with your T about these feelings, because they are an important part of the work.