Hi Tess, Weller used to do this as a puppy too. He would be so happy to see anyone he would be jumping around wanting their attention, only to wet himself when they went to stroke him.Also being a boy the wee tended to aim upwards because he would roll on to his back!
As long as you can see its excitement/ submission weeing I can promise you she will grow out of it.
I found the only way to reduce the weeing was to warn EVERYONE to ignore the puppy for a good while when new people came in, or when we would come down in the morning or return home from an outing. It was hard but definately helped.
If it is more constant trickling, more like incontinance then a trip to the vet will be in order.

I found the only way to reduce the weeing was to warn EVERYONE to ignore the puppy for a good while when new people came in, or when we would come down in the morning or return home from an outing. It was hard but definately helped.
If it is more constant trickling, more like incontinance then a trip to the vet will be in order.