They change a lot in the 8-14 month range..at least in my opinion. I would try and catch her when she pees on the carpet and say No No firmly and bring her outside immed.
I think at this stage your doing a lot more than most and she just has to get comfortable and settled. It just takes time. Trust me if she is pottying 90% of the time in the right place and time you are winning the war. They regress often times in their behavior but it can be corrected so dont be surprised if other little things pop up. I liken it to being a toddler and "testing the boundaries". As with a child, setting limits and a schedule like you are doing is best..nice job!
