I can understand your feeling treated unappropriately. To me it seems extremely insensitive of her not to tell you why she was asking to keep it, particularly since you had earlier said you would not let her keep it. Her request really was something that warranted a good reason, under the circumstances. In my experience, therapists all too often get so off in their own worlds that they forget common courtesies such as giving their reasons for requests. Unfortunately, it's just something we have to deal with. But I do hope that next time you see her, you will ask her why she asked to keep it, particularly since you had already asked her not to, and that you point out how her asking, without even the courtesy of giving a reason or of acknowledging that she had previously agreed to give it back, appears from your perspective. (My experience in therapy is that I can rarely ask questions on the spot, but have to "psych myself up" and rehearse beforehand.)