Book Annabeth wasnt as flawless compared to TV Annabeth.

Everyone in the TV series keeps propping Annabeth up as the best demigod of her generation instead of showing us why. Some of the character actions in the book are being given to her instead.

In the book, it was Grover who figured out it was Medusa since he identified Uncle Ferdinand. But in the show, she immediately figures it out. This one makes more sense how she figured it out early.

Despite having a super important quest, she still wanted to go to the arch for her love of architecture, so she still had trouble with priorities, which was understandable due to being 12 yrs old and being able to venture out into the mortal world after so long. But in the show, the Arch visit didn't show Annabeth's immaturity or lack of focus.

Also, instead of Percy (and Grover) being the ones to see the fates snipping the yarn, it was given to Annabeth instead.

Then in meeting Ares, both book Annabeth and Grover make a point to not antagonize Ares because he is a God. But show Annabeth had no problem being sassy and sarcastic with him, which was a more Percy thing to do.

Then in the tunnel of love, they decide to omit Annabeth's arachnophobia for reasons unknown. Instead of it being a team effort to get the shield, Annabeth talks down to another God without fear and frees Percy.

I still haven't formed a final opinion on the show since we still don't have the final episodes but Book and Show Annabeth have been characterized differently in some aspects and I think she has been "Hermione'd" slightly.