Porn stars are not prostitutes. Getting paid for sex on camera is not the same as getting paid by johns any more than acting in a romantic film constitutes being an escort.
The porn industry can be horrific on young girls, but it is an industry with some experience. These amateurs going it on their own could learn a thing or two from the pros. There are standards of behavior, codes of conduct, that while not universal do exist for a reason. Top of the list: Don't sign anything without a lawyer to explain copyright and contract law. Many girls never get paid what they were told they would. At least phone the nearest lawschool and ask about any free legal clinics.
Other top of list: Never go to any shoot, casting call or interview alone. Bring someone sober and with their own vehicle.