My girl would slip up here and there when she was young too. sometimes she would go right at my feet. and we still laugh to this day because she climbed up on my sons back when he was lying on the floor and she pooped on his back. I thought, "I boy I'm in big trouble with this little girl" but she learned and as she developed it was all good. We taught her to use a bell and she rings it to go out(YEAH) but we are under renovation in my home now and she has messed on the floor at least 4 or 5 times. We just simply went back to crate training for a couple of days and she's been back on track ringing her bell