Nothing weird about that... What T did *was* hurtful.

Not only does this say a lot about her lack of organisational skills but she clearly lacks professionalism.

I don't usually like telling people what to do but I would ask you to consider bringing this up with her. Why? This is not the first time it happened, yet she keeps doing it. And two, her actions reinforce your belief that you are not important and easily forgotten etc.

So, letting it slide will only reinforce your feelings of abandonment and not mattering. These are what therapy is supposed to deal with. Keeping silent will not be helping *you*.

If she keeps doing it, I would seriously consider switching Ts.