I really thought that was Yoko for a moment there, back to stir up more shit. Then I started thinking if it was just Miman suffering from same-face syndrome, but she has always been able to give every character a really distinct look that make it easy to tell them apart. Would be a hell of a reveal if it turned out Yano's mom and Yoko where cousins or something and maybe that sort of thing ties into how the mom will react to Yano being lesbian. "Oh no, she's one of those, just like that no-good cousin of mine..."