Don't feel bad. I know it's hard not to, but it isn't your fault. I think the driver was just mad because she messed up!
Rule of the road, at least here: "
When on steep, narrow or single lane roads, the downhill traffic has the right of way over uphill traffic. If you are going uphill and you see oncoming traffic, pull over to the side of the road, well out of the way and either slow down or stop."
BJ