Question

what does it mean to say she drank in her surroundings

Answer 1

$\sf\underline{What~exactly~is~"drank~in"~?}$

Well saying that "she drank in her surroundings" means that she observed and absorbed the surroundings into herself - a more detailed meaning is that she captivated/ completely grasped the situation or that she absorbed the situation into her

I hope this makes sense though, have a good evening ^^