A real question: did she actually learn a language? 6 years should be enough to be fluent at any language. My opinion is Duolingo just doesn’t work and never will. People are fooled by the gamification but it’s a time wasting app/game that gives an illusion of productivity. Like Minecraft with words.
Exactly, I did the free Language Transfer audio courses in Spanish and French and actually learnt some real useful basics of the language (they're very much introductory courses but very good).
Previously I'd spend far more time in Duolingo trying to learn and hadn't really learnt any useful language skills at all. I can see it being helpful for drilling some vocab if you were learning elsewhere, but it just doesn't work to actually learn a language.
