Board Thread:Naruto Gaiden/@comment-26889013-20150814064323/@comment-26369387-20150814100345

My first thought was that Sakura taught Sarada chakra control, but then I rememberd that Sakura had surprised look, when she saw Sarada punching the Shin-clones apart... So maybe it's similiar to Himawari activating Byakugan in secret? Like she trained in secret chakra control and discoverd that you can increase your strength with it, or something like that.