I'm not familar with the focalin you mention, but my son was dx'd ADHD (I sure wish they had left the ADD and ADHD separate dxs, but that's another topic...he's ADD, no hyperactivy) Anyhow..not sure how it affects mood swings, but he was given Strattera, which is supposed to be considered a non-stimulant ADHD med, so I can't help but wonder if that would be a useful one to check out.
Good luck and keep us posted. Sorry she (and you!) are experiencing such difficulties right now, dayton52.