Utterly butchered version?
The plot summary includes this description:
"In a slum, Lila Leid, the wife of lawyer Leid is murdered, Egon, secretary of one of Leid's clients is arrested. He was with her, and had her necklace, because he needed some money for his own stock exchange deals. The same deal brings poverty to ex-government official Rumfort . . . "
That is NOT what happened in the version that I have on DVD, which is "Triple Feature Drama Classics, Vol. 7: The Kid/Joyless Street/The Extra Girl."
http://www.amazon.com/Triple-Feature-Drama-Classics-Vol/dp/B000065QA4/
Also, Garbo's character sinks to the level of becoming a nightclub dancer (not a prostitute) to support her family in this version.
It seems that this version has been butchered by some editor.
Based on the opening credits, it looks as if this version was a re-release for American audiences in the 1930s or 1940s. It touts Garbo and only Garbo in promoting the film.