Mother's Estate - no will - Title Change

My mother passed away in 2018. My sister and I are her only legal heirs. My sister has already taken ownership of my mother's condo through power of attorney back before my mother's death. She passed months before anyone expected. I was not able to get the necessary financial and legal paperwork handled in time. My sister has stated she will sign over any claims on the house.

A few months back I finished paying off the mortgage and would like to get the title transferred to my name. I have been paying on the mortgage since 2007-2008 time frame.

All I need is assistance in filing the proper paperwork to have the title changed over to my name.