I think she needs time to take this all in. You have had the advantage of our reactions and even our ts reactions, and some time to react, to process. A lot of this is new info for her. It sounds like she puts a lot of work into her work with you - she is not merely present. So to do the concentrated kind of work you want to do at your next session, she probably feels she needs to do more to prepare than to just show up asap. They really do do more than just listen. I dont see it as her boundaries so much as its her schedule, her limitations. A free hour doesnt mean she would be ready for you at that hour, given whats happened.