Just going to chime in here for a moment~

Minato's welcome to try and distract Nu long enough for Link to flee! Just make sure he stays out of Nu's sight. Megidolaon should definitely net Link enough time to run away, but if Nu notices Minato nearby before he uses it, she might draw the connection and consider him a threat. Which... is something that should probably be avoided, I think, if only for the sake of not risking that she'll attack him if she runs into him someday. :|b