Your dog is a about a 55 lb female right Matt? Just keep trying to get her between the knee and ankle in training. If you make it to trial with her you just want her to bite the first thing she can and hang on.
Down the road all targets, and then secondary targets and opposition counter targets need to be shown to the dog for French Ringsport any ways. The bite work training in Ringsport never ends, so don't get to hung up on a specific target. Whatever the dog gets is good but there is better targets to gravitate too especially when the dog's Ring bite work foundation is in it's infancy.