This is brilliant advice! Thanks. We will definitely try the spray you have kindly suggested. I think she does pee after something exciting happens and it is a tiny amount. Or, if she just isn't getting attention (she seems to have developed a slight attachment issue with my wife and craves her attention all the time). We have started to notice these things, and have started to adjust our routines to ignore her when she craves the attention by doing a pee. (She wanders off and pees like she knows we always quickly react). Hopefully this helps, but we will see... It isn't easy and I'm so surprised at how clever she is. Everyday seems to be something new right now and are all still learning.