[quote=@The 42nd Gecko]
[@Inner Demon]	

Why wouldn't she try to kill Beast: Same reason she wouldn't try to kill Deva. She views her success rate as laughable.

Why wouldn't she try to give a command: She already gave commands and they were ignored.

Why wouldn't she do science/experimentation: She IS going to be doing this. She's finding out how Beast succeeds or fails at stopping her suicides in different environments.

Why wouldn't she look for an off switch: Not a bad idea, but I don't think you'd like the implications of her finding one.

Why is suicide her go to plan: Weren't you one of the people who read the backlog? Miyu attempted suicide or detonated herself like twice a battle on average.

Why would Beast die before Miyu? Wouldn't he die at the same time or slightly after?
[/quote]
[@The 42nd Gecko]
Okay you're the boss. 

P.S. The only command Miyu issued was "Hey, stop it. Bad hellbeast" Followed by "Ok, go ahead, knock yourself out." Then she flew away. In absence of literally knocking itself out, Beast listened. Other then that, there have been no commands for Beast to hear that I'm aware of. 

Also I'm not too weary of implications from Miyu turning Beast off anymore. At this point, if her only interaction with him is solely to try and kill herself just escape the interaction, the symbiosis will inevitably fail one way or another quite quickly. It's not that hard. In a nutshell, Beast = Senketsu from kill la kill. Take him off and he becomes nullified. Just a regular school uniform. Beast is similar only with vocal commands...and yes, if for whatever reason he doesn't die first, Beast will die shortly after Miyu and that's the end of that character.

Seems too hard to involve him in roleplays anyway.