we just had a thread on here about this subject, you might want to check it out?
It tries to answer your questions.
I have tried it with, & without meds & never was a success med free. If you scroll the
posts it will answer a LOT of your questions. Just please remember that it is only
our advice, not a p-doc's, unless they jump in & answer us!
Good luck to you & your Daughter & her Daughter!
There is believed to be a hereditary and genetic linkage in some bipolar cases but Its not something you need to worry about with a three year old unless he is having issues.
As to control without meds. Well there are three types of bipolar - BP1, BP2 and Cyclothymia which is the mildest form - and inside each of those classifications you have different behaviors and degrees of seriousness. What treatment you need depends on the symptoms you have.
I dont know of any classes that can teach you how to control bipolar without meds, personally I find it hard to believe someone who is actually bipolar can cope without a mood stabiliser long term - there are people who say that CBT can help you learn to cope and live with BP but even then meds would be usual - it really depends on the circumstances - what sort of behaviour does she show?