Usually people who have one post on this forum never come back to read their answers. I normally see 1 post and consider it a troll or somebody who is generally uninterested in having real advice on their pets, but I honestly didn't see your post to begin with. You really need to give us more information on how exactly you "establish dominance" and what the situations are where she guards and exatly how bad it escalates. 3 sentences isn't much.