Becuse those who made a course do not know Ukrainian perfectly. Course is full of Russianisms. Yes many Ukrainians are Russified and indeed say so. But this is not correct. Correct sentence is Вона нещодавно їздила до Атланти. Недаано is a Russianism. У(в) is used in other cases - Вона нещодавно була у(в) Атланті.