The Boundaries are Fuzzy

I don't mean the boundaries about what's appropriate, what questions to ask, who can say what, etc. 

We've never had that problem.

 In fact, years ago when my much younger sister earnestly told Tori that she should know that she could come to her when there were things she couldn't talk to me about, Tori came to me questioning what sort of thing that might be and why.

No, the lack of clarity here is much more fundamental.