That's perfectly fine. She'd probably learn 'Shotgun' faster than create her own ideal 'Spirit Gun' truth be told given her level at the moment. Sasuke had come far after one month with Kakashi, and it's only been a couple days with Kakashi thus far. Once she hits the chuunin finals he'll put her through the same amount of hard work and they'll show up late again xD but it's cool cause Sakura's likely been hyped and the feudal lords want to see what a 'nobody' can really do.