Join Date: Mar 2005
Location: The Book of Love
Re: A Song of Ice and Fire SPOILER THREAD (srsly spoilers from all the books ITT)
Cat was dead for a longer time and probably insane right before her death after seeing her son murdered.
However, if Jon is indeed in Ghost, then he could come back kinda off. Varamyr and Jojen both state that if you're in the beast too long, you become the beast.