Man, when even this toothpaste bitch need her screentime more?? I can't wait to see she go...

Hahahaha, toothpaste b*tch, that's so true, omg. But I am sure she's just there because author-san wanted to stir up trouble in paradise. A one-time villain, probably, unless author-san makes her the next villain to end up getting mixed with the "misterious drug seller" and try to take revenge on MC and company. Thus giving Arthur a chance to shine.