Livh was wounded in the attack, while party colleague Abdirahim Hassan was killed. 24-year-old Hassan was active in the youth wing of the Left Party in his local Husby district. Residents remember him as "one of the good guys", according to Swedish Television News.
Livh is due to come back to Sweden in a few days. She told Swedish Radio she believed the party were travelling in what was thought to be a safer part of the Somali capital.
Party leader Jonas Sjöstedt released a statement about the incident Wednesday night, calling the death of Abdirahim Hassan "a tragedy".
"He was a young man from Stockholm who was in Sonmalia as part of the Left Party's international work. We are thinking of his family and friends. Abdi will be deeply missed by many friends in the Young Left and the Left Party", he wrote.