Syrinx made no resistance, she simply followed his lead- docile and steady. Apparently the soothing technique was working because she did no shy away from him, instead the nymph participated in the conversation with hands and face expressions. Like in the blog, he had something which eased her worries and made Syrinx unlikely to bolt. A nod in agreement- yes, Pollux was already ahead.
Once they reached the bar, she climbed onto a stool- just standing so she could look a little over the crowd- and no need to look up at Castor. Did she want anything? A little shrug and a bright smile- she would have what he ordered.