Did she really go to 1796 with Barnabas or did Barnabas just believe that Kitty was inhabiting Jostte's body?
In Ep #885, soon after Kitty and Barnabas pass through the portrait, Josette talks to Natalie about having just had a dream about being in another time, detailing the events that had just happened to Kitty. Not definitive evidence that Kitty traveled back to 1796 - but a pretty good indication that was the case.
Aother thing is that if Josette dies again by suicide (poison), where does Kitty go?
A good question. Presumably she died as well. It's always dangerous to presume almost anything on DS (
), but on DS life essences/life forces/whatever tend to inhabit their original bodies when time traveling (Eve did this with Danielle Roget's trip to 1796). If Josette died, and her life force and Kitty's are one and the same, which, considering Kitty is Josette's reincarnation, would seem to make sense, that could be a strong indication that Kitty died as well. But in the DS world, where nothing is ever consistent, there's probably a whole world of speculation open here.