While the firefighters are helping Jessie, Jessie's friend is there holding her hand for comfort. Later after Dawson announced that they've hit a pedestrian, you can see Stella putting down the backboard where Jessie's friend should be holding her hand but isn't visible at all until the next close up shot of Jessie.
When the police arrest the husband, they say: "...You have the right to remain silent...", this is a procedural mistake. First of all, the officer making the arrest should've informed Darin that he is being placed under arrest and the charges he is being accused of, THEN read him his rights.