My sister and i are willed equal shares of my fathers estate, it has been closed for five years. now she is wanting to sue me

I would not worry about it. If the estate is closed, there is little or nothing she can do after this long passage of time, except bother you. Wait until she actually files and serves you with some sort of legal process, and, if that actually happens, then consult with a local attorney. ************************************************************************************** Disclaimer: California attorney Robert Miller has practiced for over 45 years and restricts his practice to real estate and probate matters in the Central District of Los Angeles. Any opinion expressed is for general informational purposes only, no attorney-client relationship is intended or created by this answer, and no action or inaction should be contemplated without first employing and consulting with a competent attorney convenient to the questioner.