Why aren't you telling your t what your friend says about her? You hold no burden of confidentiality. It's your t's problem, not yours, if she doesnt like it, but I dont think you need to protect her, or keep your friend's confidence. Because why is your friend complaining about t to you in the first place? Perhaps if you were more honest about things, t would be able to see how untenable the situation really is. As it is, you're overmanaging it, imo.