I think taking a break can be used successfully to clear both your heads as to what you want and to give her a chance to think about the qualities that she will now miss. It has been used ineffectively however when a partner is not committed to focusing on the relationship. It really depends on the two people and what your expectations are during this break. I think you should talk to her about all of your concerns and see if she is undecided because that is her personality or if there is something lacking in the relationship. Then make a plan on how to fix it. If she wants to meet your family and she wants to keep seeing you then she must have feelings for you but you can't be asked to while she sit while she remains undecided. I think I would ask the hard questions and see where her heart really is. Taking a break could allow her to meet other people and return to being single. That is a tricky option. I think open communication is a more safe option than a break. She should know your good qualities and appreciate them.
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