Dont encourage her to piss in her cage... thats her bed... a place to relax away from the hustle and bustle..... 
  
Never use the cage in a negative way.... if shes done something bad... dont put her in the cage.... or she will associate it...that when shes in there she has done something wrong.... 
  
I toiled trained mine...and the youngster is 95% there.... by taking them out every 15 mins.... 
  
When they wake up from a sleep...OUT... 
when they have drank....OUT... 
when they have ate... OUT... 
 And every 15 mins or so inbetween... 
  
It will take a few weeks...with a lot of accidents