IT's not clear whether your dad had a will or not. It is also not clear whether or not his estate (will or not) went thru the probate procedure necessary to clear title to assets in the appropriate beneficiaries. Without knowing if he had a will or the family tree and whether or not there was a probate proceeding for your dad it is impossible to speculate on what the outcome might be here. If you dad had a will and left everything to your stepmom, she was within her rights to give it all to whoever she wanted to.
You should contact a local probate lawyer for more fact specific advice.
Answered on May 17th, 2021 at 8:09 AM