Hmm...better step up your game. Most puppies learn to use the outdoors exclusively in 2-4 weeks. Some of the most common reasons they don't are structure, and by that I mean some kind of a schedule that works for a young puppy, and consistency, which refers to how often said schedule is deviated from. In your case it could be from habit. So don't let her out of your sight for a few days, keep her leashed indoors and with you always, and take her out immediately if she tries to urinate in the house. Don't punish her though, it's really just a teaching thing. Just calmly interrupt and take her outside. Some folks suggest that you praise the dog for going outside, but I don't. Just like you don't punish them for going inside, I make no big deal out of going outside...it just is what is expected. Be consistent and don't allow her to go inside for a few days and she'll catch on! The real key is you, if you spend a few days and be hyper vigilant you'll be done with it...if you are not 100% consistent it could take much much longer...