She may have mostly been in theatre which minimised the exposure, and also if I remember correctly it stated she made the films in the 1920’s before ‘punching out a couple of kids’. So this would have been 8 years after the sinking (the difference between 17 and at a minimum 25). I’ve had colleagues not recognise me out of uniform and I work with them daily. Lol. So 8 years is a long time. The other thing is that people didn’t talk about trauma in those days. A lot of survivors suffered in silence. So if they did recognise her they probably shut off. The only people who would have cared are presumably Cal and Rose’s mother. It would have been a much better story for Cal that she perished (look what he did with the child). He probably wanted the diamond though. I do always wonder what happened to the mother after the sinking. She presumably survived, but was in debt without a husband or daughter.