I trained Beenie to go outside very quickly.
I would take her outside EVERY 20 or 30 minutes and wait until she peed, then I'd praise her. It was frustrating to do that so often, espcially at night but she learned very quickly.
She had only 2 or 3 accidents in the home and when she did that I immediately took her out and in a firm tone told her she was a bad girl... but hugged her and told her she was good when she finally went outside.
If you have the time... and patience, you might want to try that for a few days.