I think it depends on what is meant by preparation.

If it's just about remembering stuff I've said even a while ago, she remembers things I've said that I didn't think she'd registered.

If it's in terms of continuity from session to session even if there was some important / intense / heavy-duty stuff -- then nope, nada, zilch. Recently she said in one session that we need to do / talk about X in the next few sessions. But, in the next session, when I brought up that she'd said that, she appeared to be totally befuddled and it's like starting from scratch every time.

I am mostly okay with the lack of continuity because it's how I generally think / function as well (flitting often from one thing to another). But, I can see how it might annoy someone.