If I were you, I'd inspect her her vulva/lady parts to see if something was nicked by a clippers or scissors.   
But if this continues, you really do need to have her checked for a UTI, which would cause burning when peeing....very painful.     
				__________________  ~ A friend told me I was delusional. I nearly fell off my unicorn.  ~    °¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie  °¨¨¨°ºOº°¨¨¨°      |