I know you posted this in January but I will let you know what I did. I just went through this with my Sheepadoodle (old english sheepdog/Poodle mix). She is very intelligent but kept urinating in the house. I was getting very frustrated when she turned around 4 months old because it seemed like she just wasn't getting it. I took her to the vet and she had a urinary tract infection. After putting her on meds we finally got through it. I am a big believer in using the crate. She was even urinating in the crate which is very abnormal for a dog. If you do not have a crate, get one! When you let your dog outside and she doesn't potty then bring her in and put her in the crate. Wait 10 to 15 minutes and take her out again. When she does go potty, praise her alot and give her a good value treat. Another trick I use is to keep the dog on a leash in the house with me for a while until I know they are potty trained--yes I know this is a pain but it will keep accidents from happening. We finally got through it and she was completely potty trained by 7 months old. All of my other dogs were done by 4 months so it was very stressful! Be patient, she may just need to have a more mature bladder. If you let her just run around the house she will just go behind furniture to potty if she thinks you are upset at her so don't give her a chance to make a mistake. Patience is the most important thing you can have. Every dog gets through it if you are consistent and make it positive. They really do want to please you, they just need to understand what you want.