User blog comment:NotSoEvilBilly/Best and Worst character design in TD/@comment-25184575-20140609132452/@comment-24971793-20140609172527

I think they made Jasmine so tall because she's supposed to be an amazon woman (=> strong, brave warrior women from Greek mythology that where freakishly tall).

So that might be the reason behind her hight. Nevertheless I do agree that it looks ridiculous when she's standing close to other contestants so I would have preferred her a bit shorter as well.