I think that it is important to realize you don't mess with cultural rules here. Yes, things are unfair here and wrong, but a western woman is not the person to try and change it. Sadly. . .
In case you aren't interested in following the link, here is a brief summary.
A Finnish woman spent two years in Saudi Arabia, working as a nurse at a hospital. For the most part, her experience was positive and she enjoyed it.
However, one day, after work, during Ramadan, (the time when Muslims fast during the day for a month and then break their fast in the evenings), she was riding in a car with some male co-workers (who were Arab, but not Saudi) to get some food. She stepped out of her car and was accosted by the muttawa and police. She was sent to a female jail for two days, without being told what was going on. (In Saudi you are guilty until proven innocent.) Her crime was riding with males to whom she wasn't related.
I think the post bears reading because the woman describes what happened in the jail and how little she was told.