A safe Keylogger for my laptop

i'm not stingy, i'm just a bit worried whenever i lend my laptop to my sister for her projects. is there a program out there that is safe and won't get deleted by norton?

You should be able to tell Norton to ignore the application you install. "Actual Keylogger" is free and seems to have somewhat positive reviews: http://download.cnet.com/Actual-Keylogger/3000-2092_4-10414894.html?tag=mncol

thank you very much!