Imma try to make this simple. You can advise your daughters, sisters, kids to be safe. You can give them advice to avoid potentially dangerous situations. What you should NOT do is provide this unsoliticited advice AFTER the assault has already taken place. Obviously the victim will already know it was a bad idea because they were assaulted. They don't need a bunch of people coming out of the woodwork giving them advice on how they should have done differently.
Good:
Advising your children and women in your lives about safety so they don't put them selves in bad situations in the future.
Bad:
Going to a woman who has already been assaulted and telling them what they should have done differently in the past.
She doesn't need a lecture on what she should have done. Focus on the party who did the wrong instead of the victim.