Wait -- someone's legs were crushed in front of the school last year and you STILL have no crossing guard?!
You're not seeing the forest for the trees here. Your own incidents should not be getting you riled at these idiots -- they should be prompting you to get yourself down to the local police department and demanding that they get a POLICE OFFICER in front of your school. Every day.
Our school is on a street where the school drop-off creates backups both ways. Just a fact. The street does not lead anywhere, not to a business district or shops; just to homes, and those who live in the area know about the daily backup times. Not a big deal except for the nitwits who end up o that street many days and don't know that and just have to zip past the lined-up cars. IN the street. Crossing over double yellow lines. Blasting over crosswalks. We also had issues with a crosswalk where parents and others would blast past too fast or without really looking.
The school asked the town and now there is a police officer, car and all, at that crosswalk every morning and afternoon. We already had a police-affiliated (not an officer) crossing guard at a different crosswalk. It did not take someone's legs being crushed for the school and the cops, together, to deal with this. We still have issues with violators who cross the yellow lines and blast past two or more cars that are waiting in the street to turn into the school lot, but I hope that's going to change.
Drop the ire at these two women -- you are taking it all too personally (what you think is a "dirty look" may have zero, zip, nothing to do with you at all). But they ARE driving dangerously. That incident last year alone should have resulted iin a crossing guard! Now, take your own experience-- you should not try to name or shame these women, you don't even know their names anyway -- and get other parents involved; get a petition going; attend PTA and school board and town council meetings -- whatever it takes. People are driving recklessly over and over -- do you want that to continue next year?
Turn the anger and the focus on yourself into something else: Turn it into energy and a focus on the bigger issue. Do that and everyone will benefit including you and your child.
The cops and the school are utterly asking for a serious accident if they don't get on the ball.. Demand a traffic study. Demand that someone come and observe driving patterns around the school at dropoff and pickup times. But don't make it about you and your worries regarding these women. You can prove nothing. But you CAN get other parents together on the larger idea of dangerous driving around school.