No, i dont think she was, i think this is a bit of a stretch....
Laureen was just interested in Jack, and Jack didnt under stand why, that's what intrigued Jack about Laureen so much. When they first met it was a example of what Laureen's characters about.
Laureen is in a rush because her dad wants her back by 12. So she confronts Jack, very uncommon in those days. She tells him 'What are you waiting for cowboy, a mating call"
He is waiting for a mating call, but not from her. When he was on the mountain he gave Ennis a mating call or dance. So his waiting there for a mating call from some one like the Rodeo Clown. But its Laureen who gives him just that. She dances with him. She doing her mating dance to get what she wants, which she is use to getting. Jack never gets what he wants....
Laureen is more like her father than she'll like to amit. She is a business women and that's what she does best, Laureen being in a rush with Jack is showing her personality. Shes a women who gets what she wants, she has a deadline and she makes it. That she doesnt really care for her father. But she obays his rules....
Laureen being pregnant is a stretch, a bit of a one at that. I dont think it deserves "Topic of the week"
How do we really know Laureen and Jack were together for a year or so before she feel pregnant?