[LunarBerry]

I usually use the sound "EHH!" or "EERH!" in an almost firm, growl tone to convey the no, leave it, or drop it. Or something I don't want my girl to do. She actually gets it most of the time unless she wants to be stubborn. I find the simple short sound to be easier than to say leave it. But I think she can figure the term "no" just as easy enough though. Find a comfortable/easy command or tone to teach her that something displeases you about what she's doing.