She has a stable marriage to her childhood sweetheart. They have reasonable expectations of each other and provide each other with support. She is completely devoted to her kids, completely unlike Sarah. I think they are giving nurture a bit too much credit. Its hard to believe that one person could be so different just given environmental factors. Thei DNA would have to be different.
Well, that's the whole point of the story... to make us think about nature vs nurture. One thing's for sure, all the clones are extremely intelligent and resourceful, and totally capable of going to extremes to protect themselves, their loved ones, or their beliefs.
It's looking like as this story unfolds, the clones are pushing each other (intentionally or not) to become better people. Sarah is becoming less impulsive and more responsible, Alison is becoming less of a biotch and is realizing the emptiness of her suburban existence, and Helena seems on the verge of real feelings and empathy. To this point, Cosima seems to have gotten worse in her arrogance (she doesn't seem to get that science is very different from technology). Of all the clones, Cosima is ostensibly the most educated, but is really doing stupid things. But I bet she will show a more noble side soon.
I think Alison was probably correct when she said that Sarah was the least messed up. Sarah was a con artist, but I doubt she would have let Ainsley die like that. To the outside world, Alison seems to be decent, but it is all for appearances. Alison is a cut-throat mean girl who mixes pills and alcohol. I think Cosima seems like a very good person, but we don't have as much insight to her character. Helena cannot be judged because she was a brain washed victim of horrible abuse. Having said all this, Alison is my favorite of the clones. She is funny. I love the combination of Alison and Felix.
Well, I like Alison a lot. But remember this? Alison is willing to do anything to protect herself - and her family. She considered Aynsley a enemy and a danger to her family, as she believed it was Aynsley.
I think it was a genius move - to show how far Alison is willing to go.