I'm betting that the answers to all those questions vary (just like it all varies for criminals) depending on who the inmate is, why he or she was in there in the first place and for how long.
However, I just read a few articles about such escapes in several parts of the country. Extensive manhunts ensued and, so far, some were recaptured and some were still at large.
I don't know about criminally charged but since such incarceration is generally open ended I'm guessing that an escape guarantees the inmate a longer stay under more rigorous security.
More details would help get better comments.