Miranda is a multiple-award winning writer/director. A graduate of UT/Austin with a BFA in Film/Television and Communications, Miranda's student short True was purchased and screened by L'Entrepôt Cinema in Paris, France (1997). She later directed a series Eat Art for PBS that aired in 5 US markets (Houston, Austin, Dallas, Phoenix, Los Angeles). In 2001, she Executive Produced/Wrote/Directed Marisa Romanov, a short that debut that year at the International Venice Film Festival Official Shorts Selection and received Audience Choice. The short also screened that year at Berlin Film Festival in the Alternate Selection. Spigener-Sapon's play The Flame, in which she directed in 1997, received praised by The Village Voice during it's Off-Broadway run at the former Bleecker Street Theatre in NYC and also by The Houston Press at the NY Deli Theatre in Houston, Texas. Later, in 2017, Miranda directed the 20th anniversary run of The Flame in Los Angeles, gaining praise from The Los Angeles Times and several blogger influencers. Miranda has produced and directed a number of local, regional and national commercial spots for television as well as documentary projects as a producer at Discovery Networks that included Walk On,, about equine/hippotherapy for the disabled. In 2017, Miranda directed the 20th anniversary run of The Flame at Metropolis in Santa Monica, gaining praise from The Los Angeles Times. In 2018, Miranda directed the stage adaptation of her WCOP award-winning, time-travel/sci-fi/romance short story, Coffee with John, which received a glowing mention in The Los Angeles Times.
Most recently, Miranda produced/directed the documentary feature, Masculinity That Inspires Change and directed the short film The Power of Forgiveness, both acquired by Amazon and streaming on Prime. In Addition to her work in TV/film/theatre, Miranda was signed by Winterwolf Press to write a 4-book prequel series to her Marisa Romanov film with the first novel, Charles: A Marisa Romanov Story, to debut Winter 2020. She also produces a nationally syndicated podcast for iHeartRadio now in Season 2, Inspire Change with Gunter.