Boy, this sounds so confusing,,and I have done major study on genetics...
But I would think the best and smartest thing to do is ask the expert that is on this site under 'Families',,,under the Ambry Genetics,,and his name is Steven Keiles...He's the perfect resource to go to... If you mention his name to any CF doctor ,, they all seem to know him...And he is really quick at getting your question answered right away..
Good Luck to you ,,, and wish you many blessings for a wonderful family,,,,Karla
PS pic is of Makailyn the little one ,,,same age as her gorgous red headed cousin(1wk apart in age) and their wonderful aunt