If you do not catch her in the act, do not tell her no! Bringing her over to the place it happened and telling her no will not do anything except frighten and confuse her.

When you catch her doing it quickly say "Outside!" and rush her outside. When she goes potty outside praise her and give her treats! If she goes in the house when you are not looking, just clean it up, there's no use getting angry. Keep a better watch on her so she won't be able to do it while you're not looking.