Something else that should be learned from this, too. Never, never let what a motorist does (or doesn't do) change what you are doing. It's entirely possible here that you may have hit some debris on the road and just not seen it in your attempt to get across the intersection quickly. Forget about this whole "they were so nice to me by stopping" attitude. Since when has following the law been a "nicety"?

Sure, it was good that she enquired about your safety after you crashed, but if you were concerned about "holding her up" in anyway, you would have been better to just be more careful proceeding through the intersection in the first place.