Finally got around to watching this -
Strange dynamic, but brought up a few points for me:
Black dress girl was definitely high, read - not very rational, so kept coming back for more even though the old lady kinda served them both - old lady was not afraid to wade in!
Bystanders did a pretty good job, but then lost interest cos it kept going and going. The old lady was not one to back off which was a problem I think.
Both sides did not get physically hurt enough to want to stop, but got their pride hurt enough for them to want to keep at each other. No good outcome there, though I suspect that the older couple got off more lightly than the wasted chicks, when PC Plod turned up ....
_________________
"It will be difficult at first, but then everything is difficult at first". Miyamoto Musashi