We got Lucy when she was 11 weeks. We started with using gates so that she only had access to one room. If she had an accident inside (it's very important that you catch them in the act) I would give a firm NO! and immediately take her outside. I would also be sure to take her out at least once an hour and after hard play, a meal, or if she had been in her crate. It's time consuming at first to be so attentive but she was completely housebroken within about 3 weeks. When she did go outside I would always give her a treat and tons of praise and call it by name. She will now poop or pee on request which is helpful before a walk or if we have to go somewhere and I know she will be in her crate for a bit. She was gradually given more rooms to explore although she still does not have access to the upstairs. Too many things in kids rooms to tempt her! Best of luck. It will come (pardon the pun 
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