Hi PHS Foster Coord, Without seeing Bucket I'm not really sure what her behavior is. Can she be corrected quickly with a firm "NO"?
Have you ever heard of the 2 second rule? It means we have 2 seconds to correct a dog's unwanted behavior. After that they aren't really going to hear us.
For example we had German Shepherd who had a lot of challenging behaviors and when we brought her into our home, with out 2 other dogs I had to correct her quickly. This was for the safety of our other 2 dogs, who we had already had for years. So much as a dirty look directed at our oldest dog (who was a German Shepherd mix and a lot smaller than the German Shepherd) was corrected immediately. I did this with a fast, firm, no nonsense "NO" and an angry look on my face. It worked for her every time.
On the other hand when she did something that was a wanted behavior we praised her to high heaven, letting her know what a GOOD girl she was. And I made sure she saw the happy expression on my face. She was eager to please, so this made our work easier. Plus she also learned wanted behavior from watching our 2 other dogs.
I hope this is helpful and wish you the best with Bucket.
#FosteringaPet