Like I said, that was somewhat scripted for the sake of getting things started.
The good news is that there are really very few people who know how to do a proper RNC. Usually it is just some sort of strangle hold or head lock, or at best a trachea crush, which though painful and dangerous, buys you time. Even my RNC could probably use work these days.
The other thing is that a person who is attempting sexual assault is doing just that, they are not planning on a fight, typically. A lot of attacks do end by the victim fighting back. Once things get noisy and dangerous, attackers will usually seek a way out of the situation in a sexual assault situation. This isn't a "fight" that the attacker is looking for. However, the fighting back has to be a coordinated and concerted effort.
Somebody was talking about eye gouges. The problem with eye gouges is that they typicaly push the head back out of range particular from a pinned position, thus are usually not effective. To actually gouge an eye, you have to have some sort of stable position from which to apply force. If you want to damage their eye effectively, you have to actually touch the eyeball and scratch it. We have autonomic responses to this. It isn't the d3adly but it can buy you time, and it doesn't require as much force as a gouging maneuver. If you can isolate their head then a gouge is possible.
A good way to attack the eye is to use the thumb nail and hit the center of the eye then slash down to the cheek bone. Or you can go to the inner corner of the eye and slash outwards. Or a sharp poke into the eye will stagger them, but it won't stop them, it is just a opportunity creator.
What is more effective for head control is latching onto an ear, though. You can tear one off the head if you have enough leverage.
Hitting the attacker with an improvised weapon is always possible, as previously mentioned. Read an account where a woman, "submitted" and then bashed the guy in the head with the corner of a heavy table lamp, repeatedly. It worked.
Also, people here poo poo groin grabs. However, most non-trained guys are really not cool with having their testicles strangled. It just freaks them out. If you do it right you isolate one testicle and squeeze and twist, this is very painful. This isn't that hard to do if they are wearing baggier pants or shorts. Through jeans this is harder to do.
Again not the d3adly, but there are documented cases of women submitting an attacker with this. In one case a little old lady told her attacker she would blow him and got him to drop his pants. Then she just wrapped his testicles up in her hand, led him to the phone, called the police AND then tossed him out on the front porch. He passed out and the cops found him. Excellent use of psychological tactics on an idiot. Our jimmies are placed between our legs for a reason, a few reasons, and exposing them to attack is really stupid, but these guys aren't in a "fight" so they aren't thinking about their survival.
SD is not the same as fighting a match, particularly for women. The goal is to survive and live, not "win" in the traditional sense. I think this is just as valid for men on many levels.
Yrkoon9 brought up some great points, and I completely agree with the kicking a guy when he is down thing. We taught our people to go for the ribs and head and stomp on ankles (can't do that full contact in training though). Then when they think the person is unconscious, they collect and assess the situation, yell "No" really loud while moving to above their head (hard position to defend) and then leave the area if possible.
The last thing is how to deal with the cops, because if someone called them they may arrive. The cops see your student with unconscious dude on the ground. Guess who is the potential bad guy in their eyes? So, we taught them to fully comply with the police but they had a script to say. I won't write it hear for sake of brevity.
Good physical technique IS important in SD, but many times it is less important than the socialpsychological tactics. People understand fighting soon enough, but getting them to change social habits and recognize that people (particularly people they thought loved them) can be very evil is very, very difficult.
Our primary goal was to give them a skillset that was both physical and psychological, give them a set of goals, and then teach them some flexibility in that plan for a better chance at dealing with all the things we couldn't possibly cover. We tried to pick things that worked in a variety of situations.
We also gave them the option to submit if they felt their life would be saved by doing so. It isn't up to us as instructors to make that determination for them. This isn't a match with a referee who will stop it once you pass out or are KO'd.