granite, that is a special dream! it has all kinds of messages in it for you from you! one I see clearly is that you really are trusting your T more .... and that you are trusting her because she really is showing that she is on your side and advocating for you and understanding the pain and the wounds the mother caused and having compassion for that - that is in your dream because really you do understand that that is in your T's heart for you.
as for the comfort, I know it's scary to feel the need and the want for comfort and to admit it out loud. I see why you'd feel like you crossed boundaries - but as others said, you didn't really cross them, not in a dream! and really, I don't think it's T's boundaries or crossing them that worries or scares you (not saying it doesn't at all, though!) as much as it is opening up your boundaries to allow more comfort to be given.
I think it's more likely T is thinking she'd like you to do that part than it is that she's worried you'll break her boundaries.
I think also in this dream you DID give yourself comfort! You comforted your inner child (in the dream you have T offering that, but the whole dream creation is one your mind made, so you are the one comforting yourself really)
It's OK to comfort yourself and it's OK to accept comfort from others.
I also think your T would love this dream, granite! She would be able to see it as progress happening within you and it would probably make her heart glad and she could help you get more insights from it, too.