I love Taiyaki but.. She really likes mom x daughter stuff huh.
Taiyaki's gender is not known, per Manga-Updates, so it's possible that HE really likes that stuff.
Manga-Updates apparently hasn't been edited to reflect it, but Taiyaki is definitely a woman. There was an interview she did a while back where she said she was, and IIRC talked about being a lesbian. It's linked somewhere in the 1 x 1/2 thread, and is in Spanish.
(Also, in response to some other discussion in this thread, in that interview she said that her relationship with her own mother is normal. She clearly has a pretty major kink for the mother/daughter scenario, but I'm pretty sure it's like that kind of kink usually is, where it's not something one would actually want to do in reality at all. In contrast to some other mangaka, I've never gotten the sense from her work that there's a wish-fulfillment element to it or that any of the characters are self-inserts.)