Do read her books and discover in how many brilliant ways she was right.
With titles like "revolutionary hangover", "an amusing misunderstanding", and "Lenin is a baka" (I made up the last one but Lenin is a baka)
marxists.org/archive/luxemb…
Rosa lives!
Reform or revolution
The Mass Strike
The National Question
The Accumulation of Capital
The Accumulation of Capital: An Anti-Critique
The Russian Revolution