Miranda is a showrunner and multiple-award winning writer/director. A graduate of UT/Austin with a BFA in Film/Television, Miranda's student short True was purchased and screened by L'Entrepôt Cinema in Paris, France (1997). She later directed an art magazine episode for the show Eat Art on PBS. In 2001, she Executive Produced/Wrote/Directed Marisa Romanov, a short that debuted 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 short-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 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 and Broadway World. Miranda directed the documentary feature Masculinity That Inspires Change created by Gunter Swoboda for Amazon. 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 TV series project that is development. The first novel, Charles: A Marisa Romanov Story, to debut later in 2021. She also produces a nationally syndicated podcast on iHeartRadio, Audible, Spotify and Apple that is in its third season: Inspire Change with Gunter. Most recently, Miranda currently lives in Los Angeles with her husband Felipe and their two fur-baby cats Duchess and Joshie.