Of the three Eizouken girls, Tsubame’s the only one I expect to see make an appearance in this series. Kanamori’s mom doesn’t show up (I thought we did see her once from a distance, but it turns out that was her older sister), and I think we only really see Midori’s in the past, so there’s not really a modern design of her to use.

Tsubame’s on the other hand, plays a large role in the climax of the school festival arc, with both her and her husband seeing Tsubame’s animation for the first time. She’s a famous actress in the world of the show, and she seems like a pretty good mom (albeit one who’s too busy/distracted with work to spend much time with her daughter usually). At least she can make time for her here.