What tensions already show in the relations between the Mother (later named as Mrs. Eynsford Hill), the Daughter (later named as Clara), and the son, Freddy?

It is raining in Covent Garden at 11:15 p.m. Clara complains that Freddy has not found a cab yet. Freddy returns to his mother and sister and explains that there are no cabs to be found. They chide him, and as he runs off to try again to find a cab, he knocks into Liza, a flower girl, spilling her flowers into the mud.