‘Their house was purchased with my family money’: My late father left a life estate to his second wife. She’s only 10 years older than me. How can I undo this?

‘Their house was purchased with my family money’: My late father left a life estate to his second wife. She’s only 10 years older than me. How can I undo this?
“Apparently the probate laws in Florida are different, perhaps superseding the will.”