I agree - it was an exceptional episode.
May singing while she was folding the baby clothes was so creepy. When her face appeared at the car window when Dawn was starting to drive off made me jump even though I was expecting it to happen.
Also, it was the first time that I've seen Dawn actually have real feelings for the baby she's carrying rather than previously, when I've thought the baby was just a way for her to be with Rob in her eyes. It was touching that she got so protective, adamant that May wasn't going to be her baby's mum. She seemed genuinely fearful, not just for her own life but also her little one's.