Considering the success rate of imprisonment on the show, blowing her up is the best option.

Or worst of all… REFORMED IN THE SPACE OF A SINGLE FINALE!  
Oh gasp, oh horror!

That’s a pretty good point actually

Not only turned to stone, but also fully capable of seeing and hearing what happens outside of his prison.

Don’t take any chances!

@Darth Shy  
I’d be against shattering to pieces and/or being blown up… She doesn’t deserve that considering she’s not that evil.

I’d actually be open to all of those