When Dorothy enters the living room and finds Stan and his lawyer, the lawyer is pulling on Stan's arm as if he's trying to get him out of a dangerous situation. They appear to be in the middle of some sort of action related to a joke that was going on before Dorothy enters, but whatever it was, it was obviously cut from the show before it aired.
After trying to hand Rose the letter, Dorothy sets it down, and a sound is heard of it touching the table. In the next shot it's back in Dorothy's hand and she trying to give it to Rose again.