At that time, girls were asked to cooperate with a boy to complete one thing, even if they were playing games, they might be laughed at as "lovers" This kind of ridicule is an extremely embarrassing thing for girls. Perhaps it is difficult for modern people to understand the harsh demands of society on girls at that time. I remember that in Zhang Ailing's The Golden Lock, when Cao mentioned her daughter's marriage to others, her daughter didn't leave in time, but listened to a few words there, and Cao severely scolded her and called her shameless. This is not Qiao Qi's abnormal condition, but the social custom at that time. This was still the case during the Republic of China, not to mention the kind of big family in ancient times? By the time of the banquet, Baoyu had told Daiyu that he would never forget you in his sleep. However, the two people's minds cannot be made public, so they still have to adopt an attitude of avoiding being paired.
Besides, Lin Daiyu was in poor health at that time. I remember that after they played for a while, Aunt Xue sent someone to urge Daiyu to go back to take medicine. In this case, it is understandable that she should try to avoid drinking.