It looks in very good health!
Maybe someday it will look good to make a bonsai, who knows... It is still a nice plant anyway!
Well... I know it was risky to only use a little group of leaves to root from... but I don't think my girlfriend's mother will enjoy me cutting away the half plant! :p In reality, her plant is big enough... I will just wait some more weeks and if it does nothing, I'll ask her for having a bigger branch.
Max