Similar is story of ahilya. Some texts write she knew Indra was faking to be her husband n some say she was unaware.
If she was unaware it was not her fault still she got the curse from her husband.
Regarding Ram asking sita to go away was to show society that women crossing their limits won't be accepted because washerman's wife herself has crossed the limit and wasn't a victim like Sita.
Ancient texts failed to differentiate between a victim n perpetrator of act as a result of which women who got raped were shamed by society instead of rapist n this mentality still exists.
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