I'm kind of uspet how Sylvia was presented in this manga....if feel like shes missing so...

I'm kind of uspet how Sylvia was presented in this manga....if feel like shes missing so much characteristics even her drawing....shes so much more sarcastic, majestic, funny and gentle in the novel....in the manga she just looks like a big gloomy lonley monster...and why is her voice"ugly" its said its was wonderful in the novel.....i don't know but all those little details that are missing here made the chapter really shallow...I really recommend reading the light novel