The normal base personality for the Shitorariis, at least once they each find out that they're robots with a facsimile of a sick girl's consciousness, is wanting robots and humans to live together in harmony, like rooftop Shitorarii mentioned in chapter 39.
Okay, minor correction, it's the company president/father's dream to create a society where humans and robots are treated as equals but rooftop Shitorarii, who is Shitorarii #2, happily agrees and I don't see any sign of a hole on her forehead in that chapter so she's probably not faking her enthusiasm.
Shitorarii #2 is, of course, the original Shitorarii robot with Shitorarii #1 being the flesh-and-blood Shitorarii Ichijou who is asleep in the stasis pod. Shitorarii #2 shows up in the flashback as the Shitorarii that Ryuseii is introduced to by her father in the room with the stasis pod (although that's a flashback inside a flashback since we were already up to Shitorarii #17 at the beginning of the flashback, when she got her head knocked off by the soccer ball/football, and girlfriend Shitorarii is Shitorari #35, the final Shitorarii robot as of chapter 45).
Shitorari #2 is, at some point after chapter 42, hacked by the (presumed) uncle. She dyes her hair brown (or replaces her blond hair scalp piece with a brown hair scalp piece since she is a robot after all) and becomes the Tea Party Shitorarii who kidnaps Megu and holds her hostage.
EDIT: Not gonna make a new post right now but
the first four rough pages of chapter 47 are out on Jiro Sugiura's Twitter.
It's a Mina, Mamoru, and Satsuki(!?) chapter so far. Which is more than a little confusing if you've already read the roughs for chapter 46, unless this is a flashback but flashbacks in this manga usually have black borders around the panels.