Iiiiii saw few episodes of Glee. What I did see was that Santana was hilariously bitchy, intolerant of everyone else's shit, yet at her core, ready to cut your fucking eyes out if you fucked with her friends. And I imagine that's difficult for her with no cast mates here.
That being said, aside from the occasional 'what the fuck is your deal' thing, I know it must be hard to breach her out into this world, but I feel as though we haven't seen enough of her and what she's capable of.