So it begins...
Your next post will ultimately start your change into a werewolf, and honestly you can come up with any appearance you want, however Kelly's change is much more excruciatingly painful and noisy, which will eventually alert the roaming guards.
R.I.P Guards ;)
What you do after that is generally instinctual, feral, and uncontrolled, so keep that mind, however there are instances where Kelly tries to fight the beast, especially in the presence of Doctor Zvikas, as he has an unexplained "sway" over the beast that keep it from attacking him.