Sarah began writing screenplays when she was 12 years old, but filmed her first horror short film in 2013 based on a screenplay she and a friend wrote together called 'Man in the Forest'. In 2017, Sarah filmed her first feature film, the award-winning indie horror Sargad (Swedish: Wounded), for which she also wrote the screenplay, played the main character, and did some of the special effects. Sarah wrote the screenplay for the multiple award-winning short film Rotten Love (2017) and also starred as the main character Kat.

Sarah has appeared in a lot of short films, music videos, and even in a commercial. Before taking up an acting career, Sarah was an amateur MMA fighter in Sweden and had been training MMA for 6 years. She had fights in MMA, Muay Thai, and grappling, even winning gold at a Swedish grappling tournament in 2014. She was also a writer for the popular Swedish MMA site, MMAnytt, from 2013–2015 and traveled to Vegas to cover UFC events. Sarah has studied film production at Kulturama in Stockholm, but she has also studied screenplay writing at Manuspiloterna in Alby, Stockholm. In September 2017, Sarah began studying acting for film at Prague Film School. Sarah was born in Stockholm, Sweden, but has Norwegian citizenship. Her mother is from Poland, and Sarah speaks Polish, English, and Swedish fluently.