VERY YES. This movie reminds me of Rambo in that it set a canonical example of a mental illness (child psychopathy instead of PTSD) before we really had the words to describe how it works and diagnose the symptoms. It's important that the killer is a cute neat little girl, that seems like they stumbled onto making a more realistic psychopathic person than Hollywood usually portrays, for once the "manipulative female" trope is uncannily accurate instead of just misogyny.
This isn't one of those movies that comes to mind when you think "Great", but it still has a horrifying clarity that reminds viewers of all the manipulative kids we've known. Having an early and trend setting example of this sort of horror is essential, and Rhoda is still eerily familiar despite the agedness of the melodramatic camp.