Under Tsunade, Sakura develops not only mental and physical strength but maturity! When she reunites with the (something) Naruto, is her "girl's feeling" a sign of change!?
Notes: I wasn't sure of the phrase following Tsunade, but I'm guessing it has something to do with learning under her. Obviously I don't know what the one adjective preceding Naruto indicated by the '(something)'. And I'm also not sure how to best translate the "girl's feeling" (乙女心) into English so I just went with the literal translation - it's the same phrase she used at her disappointment that Naruto really hadn't mature and she wanted to know what she should now do with her "girl's feeling". Nihongaeri's explanation for the phrase can be found here.
Also, for those who don't know me, I minored in Japanese, but I'm not fluent and there could be mistakes in this (should be obvious from the few words I didn't get :thumbs:). I just try my best to help translate at people's request, usually when it hasn't already been done by someone more fluent.