Clamor (noun) – noisy shouting
“And in that moment she was lost-or saved. The yelling figures about her pressed forward, closing her in on all sides. Maddened, she grasped at the railing, and with no previous intention began to yell like one insane, drowning in every other clamor, while torrents of tears streamed down her face.” (254, online version)
This word kind of paints a picture of how she was yelling/crying by showing us that the yell would start off loud and then slowly began to get lower and lower. Once it’s low then tears will begin to fall down her face and then the yelling/shouting/crying will begin again at the loudest to gradually lower.