She's going to want to work hard. She'll have work at the hospital but right now she'll put her effort and time into what kakashi has to offer her. I think the next day (which is day two?) she'll be surprised if he doesn't show up late and that alone will prove that he's willing to make the same effort to help her. Since this can be her first big jutsu, she isn't gonna wanna fuck it up. Sakura is going to have the chakra control where she can do certain things off the fly and I think that was noted when she used her clone jutsu against Ino, that already seemed almost second nature.