IIRC, failure to comply with the directions of a flight attendant is a felony.
No, she wasn’t arrested for “painting her fingernails”, but for failure to comply with the flight attendant’s directions.
Actually, she wasn’t even arrested.
She was detained for 10 hours and finally let go with no charges.
All in all, I think she got what’s coming to her. You don’t screw around on a flight like she did and get away with it.
(I know - I know. 20 years ago this would have been a non-issue, but we live in a totally different couuntry than we did 20 years ago.)