Joan Evans gets whipped, literally

She was seen kissing Jet by one of her father's guns, Slim Pickens, which he then tattles on. The next scene is her brothers holding her while her father whips her with a horse whip. The whipping tore the back of her dress exposing skin, but I couldn't tell if she had been given makeup to look injured, right after the whipping. I think that's racy today, let alone 1954. I wonder if this was an expression of sex that the sensors let slide? You know s and m?