User blog comment:12th Supernova/Chapter 789: The Final Countdown/@comment-36.68.182.254-20150607164354/@comment-10543621-20150608025818

I think it's important to blame the fact that we're still not exactly explained properly how parasite works. Right now, we're assuming that stronger people are able to deflect/dodge it. But what exactly are the requirements for someone to be able to avoid parasite?

As proficient as Rebecca is at dodging stuff with kenbunshoku, remember that her dodging skills were generally only effective against third-rate to average fighters at best. When stronger people challenged her, she had real issues. No where was her kenbunshoku haki and speed enough to deal with top fighters. Remeber she could do jack shit against Diamante.

As useful as her kenbunshoku may be, I don't think she's actually fast enough to compete with top tier fighters. To be honest, her dodging Hakuba's slash was a combination of her haki, along with instinct and sheer luck. Also, she didn't completely dodge the attack. She just managed to avoid her vital points enough to stand up after everyone was down. Now for the case of parasite, as long as the string manages to attach to you, you're fucked.

Sure she could have tried to dodge, who's to say she didn't? Maybe she did but failed. There are often off scene things that we don't get to see. Afterall, despite how Viola only had one panel of a kick, one can assume she probably lauched a few attacks at Doffy previously that wasn't shown, all of which he basically casually dodged and blocked. Also, take into account that Rebecca was basically stunned and extremely worried for a aunt that was attacking the strongest monster she's ever known, she was probably quite distracted. We've seen that parasite tends to work on people who are distracted and not alert enough to avoid or block it. And once parasite hits, there was NOTHING she could do. Even Jozu couldn't resist it, and I take that to mean that basically no one can.