I don't know who told this actress that tough means never moving your upper lip, or that sneering looks like strong emotion, but the character of Blue is so grating we called her 'worse than Abby'... and yet she's not in it as much so she can't drag down the show the way the lead actress (playing Mackey) does.
It's... just plain bad acting. The writers have described the cast/characters as 'quirky', which is often self-aggrandizement for 'I will get on your nerves'-and yes, they all have their moments of annoyance (the two younger leads who are partners should both stop calling themselves hot; it's not cute)-but again, they don't ruin the show the way a first-lead with no nuance can.
She's not good, or someone gave her bad direction. You decide.
