How is OK for strangers, or friends for that matter, to come up to my 5 yr old and give her bear hugs, or ruffle her hair, or tweek her cheeks? She hates it. I've told her its okay to say "no" in a strong voice, and we've practiced this, but she tends to freeze when it happens. She's blonde and blue eyed. It's even worse when on holiday in France/Italy. What to do?