Eliza's mother says they reported it to the higher-ups on the set, but nothing was done. If they'd gone right to the police in those days, the fact is the studio would have stonewalled to protect their guy... maybe he would have gotten a stern lecture behind closed doors... and Eliza would have been branded a "troublemaker" and quietly blacklisted. She wasn't an established star back then.
That's the story in about 90% of these cases. Anyone who did say "screw my career, it's not worth it" and raised a stink would be branded a disgruntled failed starlet and ridiculed.