This show is so anti adoption it hurts.
I'm not sure what show you're watching but it's not ouat. Pinocchio and Gepetto are not the only example of healthy, good adoptive relationships. There's the Huntsmen and the wolves that raised him. There's Bae and the Darlings-"Take me back to my REAL family! The Darlings!"
Also, since this show is so pro bio family, it's not like Regina and her bio family was completely screwed up and dysfunctional!! I mean, Cora only controlled and intimidated her daughter and husband with magic for years and years!!! But since Cora was Regina's bio mom, I'm sure that once showed this was aokay!!!
And it's not like Baefire didn't just jump at the opportunity to reconcile with his bio dad!!! After all, Rumple only killed people right in front of him and dropped him down a portal! It's not like they had any issues to overcome or Bae didn't blindly jump into Rumple's arms, crying out, "You're my bio dad, so I'm going to just ignore all the terrible stuff you've done right off the bat and forgive you instantly! Who cares if I was alone all those years growing up! I forgive you, Daddy, cause you're my bio parent!!!"
And Emma! Wow she had no issues at all with her bio family!! I mean it's not like Emma struggled at all to connect or understand her bio parents! I mean, she completely understood why they had to stick her in a tree and leave her all alone growing up!! No issues to overcome there!!!
It wasn't like Henry defended Regina to the Charmings at all. "Please! she's still my mom!" "Stop! Listen to yourselves! You're talking about killing my mom!" Or that they don't understand the bond between Henry and Regina at all. "She's still his mother despite all the horrors." Emma inviting Regina to the welcome party because Henry wanted it.
And none of this even matters in this discussion because Emma first tip WAS Henry not recognizing his book. Did you see the look Emma gave him? Or the fact that she asked if he was all right after that?
Emma DID NOT SAY that Henry wanting to go home with Regina was the reason that she was worried. It was a combination of things alongside a "gut feeling" that something was wrong, JUST LIKE SHE TOLD REGINA.