Thank you for your question. Please permit me to assist you with your concerns.To answer your question directly, as terrible as it may sound, heirs are free to ignore the will. They can choose to not probate it, for example, and have the proceeds be split based on state law. Or one heir (you) can choose to refuse to receive a portion of the estate, and have that portion go to the other heir (your sister). So long as there are no other beneficiaries listed and so long as the beneficiaries are not going to file for a fiduciary duty violation, you as the executor are free to dispose of the estate as you see fit. A will remains legal for life--it only gets invalidated if there is a newer will found or if the estate gets probated in full, then gets closed, and substantial times goes by that denies the ability for the will to be used to contest the conditions. Good luck.
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