No, she does not wee when left in the day and nobody is home, it is only at night when we are asleep upstairs.
We are not 100%sure it is separation anxiety that is causing it, but it appears to be the common theme?? Not sure what else could be causing it??
As far as separation anxiety we trained her to be left in stages gradually building the length of time and only returning if quiet and calm. We also ensure that when being left for the day she has expended lots of energy on a big walk/run/bike ride to allow her to settle for the day.
She receives a lot of attention in the house as the only pet all 4 of us spend a lot of time with her. When we leave her she does not make a fuss, but on return she runs around very over excited and making a lot of noise (staffies are very vocal). Sometimes our neighbour who she knows well lets her out in the garden for us and when he comes into the house she behaves in the same way. This has reduced over time through ignoring her until she settles down.
We have stopped her coming on the sofa's to prevent her spending all evening on laps/ having cuddles as we are trying to help her develop her independence. We also put a lot of time into training her to walk well, go through doors after humans, feeding her after we have all eaten etc to provide her the security of a stable pack. As I work in school I get all the holidays off so we are around a lot in the day in the holidays
Also if one or more of the family walks away when we are in town she screams and has only just been able to be trained to sit outside the local paper shop with one or two squeaks when we go in, then manages a few mins sitting quiet and when we come out she reacts the same as when we get home, v. excited and very noisy (crying and screaming)
Hope this is more help, let me know if you need any more info