[kirama]

Some dogs have a harder time getting potty trained than others. As far as peeing in the showerstall etc. It sounds like he was loose. I don't let a dog loose in the house until they reliably tell me when they need to go out to do their business, if a puppy is excited and happy they will frequently just pee where they are rather than hold it for you to take them out. Also, there's a huge variation between training particular dogs, some are harder than others- but I think it will be fine. Like others have said here, if there is any way you can find a neighbor, who could come by a few times a day and play with her during those 12 hour stints when you will be gone it will really be alot better for her- you might even ask your neighbors if they know of a teenager who would be willing to do it for a few $$ a day.