Just FYI... They rarely do, in most cases if you wait for them to say it will never ever happen happen.
Some can be super direct in how horny they are (average girl more forward when really drunk, desperation in valentines day / new years or on vacation where she can fly away from the social after math) but even then won't outright say it and directly signal you the go sign like flight controller , more like waiting on you to take charge or react to their non verbal "come on already" cues.
P. S I don't know anything about her, but go with the flow might mean she wanna have fun.
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