truly one of the biggest letdowns in piper's writing in hoo specifically is how it doesn't dig deeper into charmspeak and what a disturbing thing it is to have the power to control someone's mind. like I swear this is interesting stuff and more people would get into piper as a character if this were explored a bit more in the text. you definitely see piper disturbed by her own power and hesitant to use it (and note that like many other characters, i.e. leo and hazel, her powers have always been a source of trouble in her life - like how she got in trouble for stealing a car even though all she did was ask for it), but in my opinion the books spend way too much time in piper's perspectives on other stuff when charmspeak is such an unusual and fascinating and terrifying power that offers so many interesting avenues of character exploration
and I really wish the books would have talked more about the canonical fact that charmspeak is more effective against people who are (or could be) physically/sexually attracted to the user. this is a power that children of aphrodite have - a power that is implicitly tied to sexuality as a defense or offense. like this inherently necessitates that piper weaponizes her sexuality against monsters and deities and giants and any other antagonist that want to harm her. which is crazy. especially because she's a teenager and especially because piper is initially characterized as an underconfident girl who goes out of her way to downplay her appearance (do you guys remember how much harassment piper goes through in the books and what little gravity is afforded to those moments... like she has dangerous characters aggressively flirting with or expressing attraction to her A Lot, and she has to play into that attraction to save herself or her friends no matter how uncomfortable it makes her)
I think there's such a dark undertone to all of this that's worth investigating. we know that piper doesn't like herself, doesn't like her powers, and doesn't like demigod life. hoo has her on a journey to become more confident in herself as a person and as a daughter of aphrodite but it's always going to be fucked up that part of her role in the prophecy seven is becoming confident enough in herself that she gets better at weaponizing her ability to violate the free will of others - and her ability to use her sexuality as an armament of war