I noticed Leah’s 3 genes in the Guide too. It’s funny, I mentioned the same thing in the Explorations thread on 12/31/11. The subject of imprinting; imprinting pull to imprintees and vice versa and; Leah came up and this is what I said:
I have a theory about why Leah phased. I noticed that she is the only female in the geneology chart, in the guide, with 3 wolf genes. That is one of the reasons, I hope/wish that since magic got her monthly cycle to stop, maybe magic could get her monthly cycle started again. That is why I hope/wish that she does imprint on Jacob's & Renesmee's potential-future-son. Maybe the son could imprint on Leah and maybe Leah can imprint on him and the double imprint can correct her pause on her monthly cycle and she can bear a child or even children. Then maybe the imprinting power would not be oppose to the match. Leah would be bringing her 3 wolf genes and Jacob's & Renesmee's potential-future-son would be bringing 2 wolf genes & venom into the mix, hence, a powerful wolf. But, maybe this is too much wishful thinking.
I also, have another theory, looking at the genealogy chart in the guide, I think/guess that if Paul and Rachel have a daughter, she too will be another female wolf, if of course, she is in the proximity of vampires when she is young like Leah.
To Songbird ~ I was thinking a lot about when you said something like, Sue does not have a pull to Jacob and vice versa. My ponderings started and I thought about how Charlie and Harry were best-friends. So there is a Swan and Clearwater pull in this relationship. Hence, there could be a pull in Jacob’s & Renesmee’s potential-future-son and Leah. And of course, if Jacob & Renesmee have a daughter there would be a potential pull for the daughter and Seth to imprint on each other as well. And I thought it would be cute if one of Renesmee’s potential pregnancy(s) would be twins preferably boy and girl. So it could work out for Leah and even Seth. Though, female twins run in Jacob’s family, not boy and girl twins. But, Renesmee is not the average human female maybe there could be an exception. In any event, these are just my personal wishful theories.
I also, recently thought of another angle of why Leah has not imprinted or has been imprinted upon. Since, she already has the 3 genes, maybe the imprinting magic is looking to upgrade, to acquire the Alpha gene. And if
my theory would come into play, she certainly would be acquiring that with Jacob's and Renesmee's potential-future-son.
I do realize that Jacob is not the only Alpha, so one of Sam's potential descendants would also have the Alpha gene. But, Jacob's and Renesmee's potential son would have venom to bring into the equation. Though, sometimes I am not sure if venom is an asset or a liablity for the imprinting magic, since, Renesmee is the first vampire hybrid to be imprinted on in the Twilight Universe hence,I have nothing to compare it with.
But, these are just my speculations. Who knows what is in store for Leah's happily ever after?