Every employee in the Stash n' Hoard is afraid of her. Including her own son, Nestor (who can be just as malevolent as her at times.)
She's a horrible mother because she tortures Nestor for even the dumbest of reasons.
She is also the worst character from an already horrible show.
She likes firing people for no reason other than the fact that the writers clearly wanted it to happen.
She never gets punished for her actions, making her a karma houdini.
She has a few minor disgusting moments, like in the episode "Empty Nestor Syndrome" where she pukes out worms for Scaredy to eat.
She took Scaredy and made him her own son only to torture him.
Her design is pretty stereotypical and bland, and feel extremely out of place.
And while on the topic of design, it's also kinda ugly and creepy.
She likes terrorizing innocents and making their lives bad.
She believes that she can have full control of everyone's private lives, like forbidding Nestor from dreaming about his own shop.
She favors her other son, Lester, over Nestor, showing she doesn't care about him. Sound familiar?
(Intentional?) Redeeming Qualities
She can surprisingly admittedly be funny at times, such as "Empty Nestor Syndrome", despite WS's(I?)AHM#6.
She can surprisingly admittedly be likable at times.
Jayne Eastwood did an OK job voicing her.
Because of the abusive and horrible mother she is and the fact that she likes to fire people for no reason other than the fact that the writers clearly also wanted it to happen, it is most likely clearly likely that she is made to be hated.