No, Sakura is completely trained. She is just not in the special S class bracket Naruto and Sasuke play around in. Or at the beginning of the series in the experienced combat veteran bracket. Which she has fallen into at the beginning of Shippuden. Obviously she has a few weak points still and also obviously she has a massive, Sasuke shaped one as well. But a combat veteran she is at the beginning of Shippuden. Otherwise Sasori would have whiped the floor with her. Help or no help.