In truth, Charlie did not want Elaine to stay here and disturb his time alone with his wife.
The reason why he had tried every possible way to get Elaine to come over before this was mainly because he was going to Hong Kong and could not bear to leave his wife here alone. So, he had tricked Elaine into coming over to the United States so that she could keep Claire company and take care of her during the few days when he was in Hong Kong.
Now that Charlie was back, there was naturally no need