"I hope they get what they gave when they get to prison. THAT would be justice."
This really is not justice. This is revenge. And while it is an understandable and common emotion, it is for that reason that we must use cooler heads to reason about crime and punishment. If you wish anything to happen to someone in prision other than lawful incarceration (and if we had a lick of sense, intensive and mandatory education & psychotherapy) then you are part of the proverbial problem. Please do not encourge further violence, not to mention the continuation of the rape culture that we often see in such discussions. Wishing someone to be beaten or raped is absolutely never acceptable. If any form of corporal punishment is to be included in our prisons it needs to be based on strong science and carried out with strict safeguards for prisoner safety.
This is like the parent who slaps their child to the ground screaming "Don't HIT Other Kids". I know you probably don't mean to and maybe you don't really even mean that you hope they are abused in prison - but you said it. And I think it's important to take note our own reactions to situations.