I think it's great that you have two people now who care about you and are helping you in their different ways The more the better! I think D will be meeting some important needs for you that your T simply couldn't due to her boundaries and outlook, but now the thirst for her to fulfill a maternal role has died down you can take in all the help and support your T is offering in a different kind of a way. Like if D is fulfilling some of your maternal longings, you can sort of see your T as a favourite teacher or something? (my analogy isn't really working as Ts are not teachers, I know! But I mean in the same way as a child loves her mother, but can also have happy and enriching relationships with other special people, right?)