Hi, Angie....yes to all of the above!! With your family history and your daughter's reaction to the Ritalin it is almost certain that she is BP. Sounds as if she had an induced mania/hypomania. You mustn't feel bad about this because if your daughter has the gene for BP it would have been just a matter of time before it was triggered. Either by stress, a traumatice experience or loss such as a death in the family, loss of a pet or a divorce or even hormonal changes will trigger the emergence of BP. In a way it is a blessing if it happened now because the earlier it is treated the better.
Also, if you read up on it, BP and ADHD share alot of the same charactereistics and are often misdiagnosed for one another. I would suggest that you go to the library and read up all that you can about BP....the book "The Bipolar Child" is a wonderful one which will have you well informed before you actually meet with the psychiatrist. Usually most psychiatrists are not quick to diagnose BP in children but with your family history as well as your daughter's reaction to the stimulant, it is most likely that they will treat her for BP.
My advice is to get as much information as you can about children with BP and how it is treated. It is treated much differently than as with an adult s educating yourself is very important in terms of supporting your daughter and being proactive in her overall progress and treatment. AND....as I am finding out, it isn't an easy thing to go through as a parent...finding support for yourself and the rest of your family will be vital in getting through this with strength and little effects on your immediate family. Everyone is affected by BP...it is not just the child, it is everybody who loves her as well.
There are many of us here for you....I am sure that as I have found, knowing that there are others who are walking in your two shoes really is a blessing and helps to carry you through.
Welcome and we look forward to seeing more of you here ~ Goody, the one dishing out lots of (((HUGS)))