I think the lesson here is that stuff happens, even when you do your best. It might not have been possible to prevent this. You'll have another accident again one day. Face the fact now. You may be a perfectly fine cyclist.

Did you help the woman?

I'm not convinced walking this section will make things safer. Your next accident is likely to be somewhere else. If you just avoid the places where you've had accidents, it probably won't help. It's kind of lightning hitting in the same place again. Unless the steepness of the road is truly a severe hazard.