Not just that, Maleficent is a fairy. Whilst Flora, Fauna and Merryweather represent the Victorian revision of fairies as kind, helpful and friendly to humans, Maleficent is the Fair Folk from traditional folklore: unpredictable, dangerous, vicious, primal and very much operating on a moral code very different to that of humans. Cursing a baby for the passive aggressive rich people behaviour of her parents, and then “punishing” the girl’s betrothed to boot is very much typical behaviour of the Fair Folk: we are talking about the creatures that stole babies and replaced them with changelings in the dead of night, controlled the forces of nature and are capable of catastrophic acts of retribution for a slight, real or imagined. Even the few humans they take a liking to are not safe: folklore fairies are distinctly non-sentimental, and decades of charity and faithful service can be undone and earn fury fairy wrath with one simple act of breaking a fairy bargain or personal standard, unthinking or otherwise. If a fairy says you are not to leave any eggshells lying out under a full moon after showering you with riches, you better do as they fucking say or you will be very, very, very sorry. In fairy code, you can be punished for a loved one’s act of “transgression”, as Aurora and Philip found out.
I would have loved Maleficent to not do the stupid blah blah Wicked ripoff crap and focus on her lore as a fairy witch: one way i would do that is focus on the traditional weakness to iron (that’s why steel types are strong against fairy types folks): the very touch of iron is painful to a fairy and the slightest wound with the substance is deadly to them. One way I would show this is when Flora and friends present Philip with the Sword of Truth, they are very careful not to touch it with their bare hands, and usually keep it wrapped up (and even then they get a very uncomfortable prickling feel when they touch it through the fabric) and an iron sword straight through Melly’s evil heart is the only way to do the bitch in.