move in packs - she got grabbed because she could be isolated. a few more people around her and they'd have been able to de-arrest. talk to the people you're with and be decisive about what you're doing. talk through scenarios like this and know what you're going to do, at least intellectually. it will make it less likely you get caught flat-footed.

move like water - get in, do what you're going to do, and when there's too much resistance, just redirect, redirect, redirect always moving to where you want to be.