She's old and bitter. No different than a few of the other personalities like hers. People have a choices. As Bettie Davis famously said, "Old age ain't no place for sissies!" Some people allow that to discolor their personalities instead of taking it all in stride.
TOP is one of those people who not only hate getting old, but wants to spread their misery to others. IMHO, that's two major faults negatively affecting her happiness. She's probably been like that most of her adult life, but some people change.
I've known at least two people who were great, but had incapacitating strokes and became bitter and mean. The reason is obvious; they want to die and society won't let them. Ergo, they hate society.
I have no idea what drives TOP's hate but am guessing single mom, hates men but loves attention from men. Most of her problems are self-fulfilling prophecies. Example; dated a certain type of man which ends badly, i.e. he dumps her after a few months of sex. She hates the man but doesn't accept that it was her choice in men that brought her unsatisfying relationship with a man.
She's obviously very unhappy but wears a happy face mask: