That does sound pretty bizarre. I do occasionally flip out like she did, but only if I get a close pass. Like close enough to touch elbows with the person passing me. People rarely say OYL over where I ride. It's also usually roadies who do this to me, but that could be because most people who pass me are roadies. It's like some of them are so clueless about passing that they think I'm not going to hit a pothole and accidentally drop into them during their pass or something. Y'know, a pothole I probably would have noticed if they didn't pass by close enough to touch elbows and startle me. As for me, I always try to give as much room as I can when passing other cyclists and pedestrians on the street and on the MUP. If there's room, I will move into the next traffic lane to pass.

I've only come across indignant pedestrians and cyclists when riding on MUP's. Granted, it's their fault for hogging the entire MUP by walking three or more abreast and acting like they're the only ones using it. One of my pet peeves about riding on MUP's is definitely when I come across a slower group of peds or cyclists hogging both lanes and refusing to move aside for faster moving people or especially for people approaching from the opposite side.