I would get her chasing a rabbit skin on the end of a fishing rod. Like a falconry Pole Lure. Just treat it as a game. Personally, I wouldn't let her chase rabbits at 10 month, old as they get frustrated & end up giving mouth. I'd wait till she's at least 12 month old before entering her & concentrate on retreiving, jumping, recall, behaviour around livestock, general obedience, etc. You'll have no trouble getting her to chase rabbits later on. Especially if you have another dog to encourage her.
It really depends on the dog, when to start it off. Some mature quicker than others. S