Estate Planning Issues: How Can She Get the House Back

My question involves estate proceedings in the state of: Florida.
My grandmother deeded her house to her daughter and daughter in law (son died in 1969). She did this 8 years ago thinking it wouldn't get stuck in probate. Now shes considering selling the house because shes 97....so daughter signed quick claim deed to her.....daughter in law said No.....and wont sign. This is killing my grandmother. Her attorney basically said theres nothing she can do if daughter in law doesn't sign......so she cant sell the house she worked hard and paid for......??? Shes not dead.....its HER house. She was considering moving to an assistant living facility and using the money from the house.

HELP

Estate Planning Issues: How Can She Get the House Back