MIAMI — Leeann Parker got three things the moment she left prison after almost 20 years: a cool outfit, a hug from her 3-year-old grandson and a tote bag of new books. Parker, who was incarcerated when her daughters were 5 and 9, said she entered Homestead Correctional Institution angry and bitter. At the end of August, with the help of a local nonprofit Exchange for Change, she left prison as a writer. She left with a smile on her face.