We have to consider the two words together ("out of") which describes an origin of something. In your sentence, she was blamed with something that originated/happened/occurred from the past.
There are cases where there is a slight nuance when "out" is used. For example:
A: This table is made of wood. B:This table is made out of recycled materials.
In sentence B, the focus has shifted to the origin of the materials used to construct a table. In sentence A, the focus is merely on the material used to construct a table. If you were to write: "This table is made of recycled materials", the meaning should still be easily understood.
There are other cases where "out" is essential. For example:
C: The campers were of danger.
D: The campers were out of danger.
In sentence C, the sentence doesn't make sense. In sentence D, "out of" expresses the meaning of no longer being under a condition. "out" is essential here.
The expression "out of" is also found in idioms: "Out of the blue (originating from an unexpected source), the train derailed and ploughed into the platform full of waiting commuters."
I hope this helps.