Is there something I'm just not getting?

Again with this 30-year old who is the school psychologist, I've reached yet another solid rock. I see the social difficulties I have beginning to unfold, and I see her attitude changing. Hopefully, it won't get to the point where she literally loses her patience with my persistence. This morning I visited her and made a comment about giving her a break yesterday. I usually visit her every day, in the morning and after school. Anyway, I mentioned her saying that she "trusted me" last year, which she says she has no memory of, regarding it as something casual that pertained to whatever conversation we were having. I also mentioned asking her if she knew someone named Cheryl (her mother's name) and she immediately asked where I got that from, and I told her because her jacket was red (the color of a cherry) and Cheryl seems to stem from that. She told me that it doesn't make any sense and I know that, then she told me that she trusted me. Since then, her attitude seems to have changed, and she told me it's not my job to yze her behavior which I most certainly am NOT doing, I find her change to be pretty obvious because I've seen it before. She just isn't the same vibrant, ecstatic person she was. That is my only observation. Not as excited to see me, not so personal anymore, and one thing which I find really strange is that she isn't asking me repeatedly when I turn 18 years old (which she has done almost every other day last year). Hm-mm....wh was knowing when my eighteenth is significant to her? What am I not understanding?