Have you asked? In many ways therapy is a relationship like any other. I consider the other person's request when they ask me to do it; it doesn't mean I roll over and comply. But if your fear is that this is a manipulation of some sort, if you can't take what she says at face value, then ask.

Is it possible this could be helpful to you and move you ahead in your therapy? It makes some objective sense to me.

But the other relational piece is what's the cost to you?

And have you asked her what happens afterwards, like suppose the other T does not agree with her. How do you feel about that? It would make sense to me that you and your T talk about all the possibilities.