Do I tell an elderly stranger that her job offer is almost certainly a scam?

I had a short video pop up when I was on YouTube from a creator I had never seen before. It was an elderly woman talking about her ‘pin of the day’ (a costume jewelry brooch). She said she was just treated for cancer but she’s excited that she got a job offer.

Someone she didn’t know had phoned her and said they had « seen her in action », presumably on YouTube, and they were calling to hire her for a remote job. As she described the opportunity, which she had not applied for, I realized it has all the markings of a scam.

This woman is elderly, not well physically, and apparently not doing well financially. She also said she was happy to be offered the job because she has low self esteem. I wanted to warn her about the possible scam but I’m torn because not only would it be upsetting and potentially embarrassing (I can’t send her a message so it would have to be a public comment), experience has shown me that trying to warn someone about a scam is likely futile. What would you do in this situation?

EDIT: Thank you to those who have replied so far. The consensus is to say something so I will think of how to tell her. Thank you for your help and insights.