I think it is great that you feel a connection with your T and feel safe and supported, that is important when working through tough issues. I just want you to be careful though because although it feels amazing to have someone fill that longing for a mother, your T is not ethically going to be able to do this and I am concerned by reading about your T doing your hair as the beginning of a slippery slope that could lead to you getting hurt.
I to have had these feelings and as much as it hurt to have my T tell me that they could not fill this role I now understand that by having t try and fill the role I was not working through my need, I was just prolonging it and keeping it in the unrealistic realm.
I know how much it hurts to be abandoned by someone who says and does everything you want and need only to change and I don't want that to happen to you.
Your T needs to have boundaries and I'm concerned that your T is lacking in this vital skill.
So just take care