ok so before some people get the wrong idea
A. that is not the true thorelii, the true thorelii is not in cultivation and has been lost for over a hundred years until a couple of kids poached a huge population that they found recently.
B. the leaf attached to the pitcher, the pitchers have reverted to the protopitcher stage (similar to the first leaves we see on seedlings, so not not all that crazy)
C. im pretty sure that this is one of those indochinese species with a tuberous like root system, wait till it gets mature, youll see what i mean.
But on another note, great job rescuing the plant MM, if it is one of the indochinese species with a tuber, you can expect that this plant will probably go through dieback phases and have somewhat of a dormancy, you should read up on indochinese species for more info on this as i am not the one to really teach about it, also check up with Francois, Macello, or any other number of the leading indochinese experts over on pitcherplants.proboards
the fimbriated leaf edges are another thing that you see in seedling leaves, but it is a common trait of N. mirabilis (not saying it is a mirabilis, just saying that leaf style does exist on some species)