I'll thank you not to twist my words and to stop interpreting my intentions.
In-story justifications have been given. In-story justifications are leaping off the page, actually. Now, you don't buy the circumstances because you think Dick has a better support network. As if your right, of course. But those circumstances exist within the story. Personally, they worked for me - I could find myself believing that Dick would react this or that way.
If a male writer had shown a longtime costumed crimefighter like Black Canary reacting this way - not fighting back, not protesting, not even MOVING - they would have been accused of HOLY SHIT MISOGYNY, and rightly so.
Black Canary and Nightwing are two different characters and they wouldn't react or fail to react the same way.