I actually expected a bit more from this installment. I hardly laughed at all and I barley understood Samantha's obsession with a 'baby', in this case a dog being the best substitute, seeing as Sam couldn't return a baby after he/she was adopted.
This storyline has been done many times over. Girl holds baby in arms,
realizes what motherhood would be like, finds a substitute for their own child and realizes the responsibility was too much of a burden.