Welcome!
While I was reading your post I was wondering whether she's on the extended release, or not. I know that Ritalin usually lasts for only a certain amount of hours and, with my son, I could tell the drop off point, drastically.
Something that helped (when Ritalin still worked for my difficult child) was an extra, very small dose of Ritalin to administer either immediately after school or right before he left as to overlap a bit so there was a bit more "sane" time, at least, through dinner.
My son is another who was never affected by positive OR negative reinforcements. I'm still going a little loopy with trying to figure out his puzzle of a brain, but little by little, he seems to have calmed down a bit.
A big thing that helped me was his journal. It went with him everywhere, and everyone (teachers, my husband and I, camp counselors, etc...) wrote the negetive AND positive things that stood out that my difficult child had done throughout the day. I started giving my difficult child a goal: to get one less negative and one more positive, everyday. It worked for a while, but faded (as everything kinda does), but I think, in the long run, it'll be good for him. Also, you can watch to see if you notice any patterns in behavior. This helps a lot when visiting the psychiatrist, to remember any incidents and such.
I wish you the best of luck. Keep us updated! You really did come to the PERFECT place for help. <3 :salute:
