Thing is, I don't know how you can read her tweet as anything but a suggestion Corbyn is a nazi. So seems an odd decision.
Eh?
Her tweet was in direct response to someone claiming that being egged is in and of itself proof that the person being egged is a nazi. The usual victim-blaming that's such a core part of the ideology of authoritarianism and irrational prejudices that's called "progressive" by its followers. Her tweet was (very obviously in my opinion) rebutting that opinion by referring to a person who was egged and who "progressives" would not consider a nazi.