Ayano is clearly not a bitch. She might've overworked after her mother left, but that has nothing to do with her personality. This show is aimed towards women, that's why all these artificial drama and emotionally challenged characters exist.

I'm guessing Ayano's mom isn't really a total asshole and left her daughter not because she was disappointed but because she saw how painful it is for Ayano to live that way, to the point Ayano had to play through the flu at its peak (the other bitch cheated because she was already recovering by the time they played, none of that was fair or equal). Blondie here is angry at Ayano because the mom keeps comparing them, and she feels inferior to all the stories.

I wish Ayano would just return to her saiyan form of wiping out spiky hair 21-0.