HARTFORD, Conn. — There are good days for West Tarricone. Days when she can laugh and live like any other 9-year-old. Days when she can play with her brother, Blake, and watch “The Ellen DeGeneres Show” on her iPad.But there are also bad days. Days when her body weathers 100 seizures. Days when it has closer to 1,000 — some lasting more than 90 minutes.Lately, she’s been having more good days thanks to Connecticut’s new experiment with medical marijuana.Doctors diagnosed West just after her first birthday, not long after her mother Cara Tarricone noticed she had been jerking oddly. Two weeks before they learned West had intractable epilepsy, she had a grand mal seizure.In the years since, West has tried a battery of nearly two dozen medicines, but just one has brought her some comfort — cannabis oil, which is derived from the marijuana plant.