Actually, if you think about it, Tae would make the perfect attack dog in a zombie infested world.
She has impressive levels of strength and ferocity when angry, even compared to other zombies, is immune to zombie bites because she is one, and while she has a habit of constantly trying to bite people, she never bites hard enough to tear off flesh and can't infect people like regular zombies.
And just like a dog, she'd be good at providing moral support and maintaining your sanity since you'd have a friend who'll always stick with you no matter what.