Why did he make Percy judo? But how does this make her cheat on Percy? A piece of advice do not read books or watch TV series, cartoons, anime and films of those years because there are many examples of these girls violent with their boyfriend and friends (I'll give an example Hermione).
Why was Annabeth cold to Racchel for two days (the second day, they talk about their common interests)? Because there was jealousy and her fatal flaw (arrogance, it's ugly: but it was her mission that she had been waiting for since she was little), it seems to me something that could have been fixed offscreen. I've read comments that make it seem like Annabeth wanted to kill Rachel (TLO spoiler does the opposite: she saves his life).
Why doesn't she let him use the power of "blood control" (as it is said, even though Percy does not control blood: he controls the poison, tears and rivers of Tartarus)? As I was told: these are children's books and that scene would be rated adult, (I would have loved to read that too). I recently learned where the name "blood control" comes from if I understand correctly it's from the foil cartoon of Avatar it's still if I understand correctly there too have they had problems with this power ?
But I don't understand why there are few people who blame Calypso for turning Leo against Percy (I hated that Percy had to justify himself to Leo in BOO).