how do i find a copy of my mothers will?

my mother passed in 2005. she had a will filed for many years. my father had a new will written for her omitting me entirely. This occurred within a week or so before she passed. she had been in signifcant pain and taking large daily doses of morphine unable to think clearly or hold a writing instrument. Therefore she was not in sound mind and someone forced her initials and signature that does not resemble her true signature. How do i find out which will was authorized by the court(filed in Nassau county)