Your puppy is just six weeks old right? At this age it is far from ideal that she is even weaned. Vet recommended weaning age is eight to ten weeks. Your pup does not have full control of its bladder just yet so dont expect an awful lot at this stage.
when the pup is old enough to have control of her bladder it is important not to rub her nose in the pee. This will have no effect whatsoever except to stress her out, she is not a child and does not understand the concept of "naughtiness" so any punishment must be restricted to a firm NO and a little shake by the scruff (like her mother would do) ONLY if she is caught in the act. She must then be put outside. Whe she goes to the toilet outside she should be praised a lot and then allowed back in/taken for a walk/played with.