In 2009, Söderquist appeared in Robert Wells' Rhapsody in Rock together with, among others, Glenn Hughes and Jon Lord from Deep Purple. In December of the same year, she toured with the show production Stjärnklart. In 2009 and 2015, Nina Söderquist participated in Champions of Rock, which is a tour with music by the rock group Queen by and including Peter Johansson. In the summer of 2016, Söderquist appeared in Badrock. In 2017, the film about Badrock was also released, in which she appears. In September 2017, she released the duet Goodbye together with Björn Skifs. She wrote the song together with Linus Sundvall.

Söderquist is a radio DJ at the radio station Rockklassiker.