The title is beautiful girls for this episode, not beautiful women, and the episode shows all the women acting like children in this episode. It was almost a ctritique of women and how they cope and deal with things.
First is Peggy, who was set up with the guy from the party from the first episode. He is a far left guy who would probably be go those G8 protest if he was around in 2010. I always thought Peggy was to be our key to the 60's and she would be the one who would grow into a proto flower child. This episode surprised though because it gave her a layer of depth in that she is not an archtype. She gets angry with the guy for critizising her business and he does not relate to the "women's movement" despite being a far left type. He tells her no one is being shot over the women's movement, which ran counter to her seeing herself as a pioneer in her business. She states blacks can force their way in like she did. Also, she is happily corporate, this is what she chose to do, and this is always going to be a gulf between her and the counter culture. To them, advertising is the enemy and that is what she picked to do in life. As Don said, their job is to get people to like a racist company, not to get them to like black people.
Sally also runs to daddy in this episode. She runs away from Betty and decides to live with daddy, but that isn't happening. She tries to almost be a wife replacement to Don, making him breakfast and talking adult, but we see she is very happy with him. She is daddy's girl. She smiles contently on the couch and turns her time with Don into a fun time while it lasts. She metaphorically and literally falls on the floor while running away from Don when she doesn't want to go home. The secretary tells her she falls all the time, and the women in this episode are doing the same.
Joan starts up with Roger again, as he buys her a message and takes care of her like a father too. Greg (to no one's surprise) has been sent to Vietnam, and Joan has been battered all season. The guys at the office are not swooning for her anymore, and a secretary called them both "old" in the marketing session earlier in the year. She needs validation and Roger is always there to provide it. We also see the city slipping into the urban decay that will be present until Guliani, as her and Roger are mugged. Her life is falling apart, like Betty with the JFK assisination last season, external events reinforce her own life cracking. To Joan, she even can't walk down the street anymore, everything is changing for the worse.
Finally, we see Faye is not the housewife type, to say the least. Last episode, she breaks up with a guy on the phone telling him she is not the cooking type. She is also not the motherly type either. She sees her interaction with Sally as a test that she failed. She has started a relationship with Don and he has kids, and she can't handle it. Don can't handle it either, but as Betty said last episode, he doesn't have to deal with it, he only gets them every other weekend.
The episode ends with all the women looking for the elevator going down. Peggy's friend, who just got rejected from Peggy's life, and Peggy, Faye and Joan sharing an elevator together. All three are falling in this episode. All failed some test in this episode, Peggy with the counter culture, Faye as a mom, and Joan as a faithful wife.