I've literally just started the leave on trainer's recommendation. .If I pushing her back I'd say get back_Sam_ said:Looking good.
I personally don't tell me dogs to leave as dummies go out. They should know that dummies aren't for them until I send them. So try and phase that out maybe?
Also I send on a name for a mark and back for a memory or blind. What would you say if she was sat away from you and you were pushing her back to a dummy?