I was stuck because I hadn't thought that before you can take Echo to the park or to the cinema you have to visit those places yourselfThere's a hidden friend and love stat. New things will unlock as those stats grow. When the friend stat is maxed, those interactions will increase the love stat instead. I'll be adding a way to see those stats later, but for now hanging out 3-5 times should max the friend stat and unlock most of the current interactions. Also some scenes are location restricted. Echo's second scene is only available at her home location.