I don't know how to respond in a supportive way. I think it is a difficult thing to consider letting someone in, but even more so when you aren't sure of your own boundaries. If you were sure of your boundaries with them, I don't think you would have asked about rules.

Are these persons directly related to your childhood abuse?

It seems like they are encroaching on your privacy and boundaries but in a veiled way by calling it 'wanting to learn to be supportive.'

Perhaps your family can learn about being supportive from a different T that your T could recommend.

I don't know, but I get the feeling you "agreed" to this without fully being in favor of it. It is behavior not unusual for someone with abuse in their history.

What was T's thinking about this? I hope with T's help that it goes very well.