LE could have the father's DNA if he was swabbed and is in jail for something else.
As for GA saying that Caylee has LA's blood,they are blood relatives. It could be as simple as that. My kids have my brother's blood. It doesn't mean we committed incest, it means that we share DNA because we have the same parents.
If you have kids, they share bits of your brother and sister's DNA and are blood relatives unless they're adopted. Does that mean that you all committed incest too?
blood relative:
A relative of a person sharing some of the sources from which genes are derived. These will include many of the genes that operate in the blood and its constituents but no special importance attaches to the blood as a vehicle of inheritance.
http://cancerweb.ncl.ac.uk/cgi-bin/omd?blood+relative
# Kinship terminology refers to the words used in a specific culture to describe a specific system of familial relationships. ...
en.wikipedia.org/wiki/Blood_relative
# A person who is related to another through a common ancestor, and not merely by marriage or adoption
en.wiktionary.org/wiki/blood_relative
I saw this interview and that's what I took it to mean at the time. I also saw Cindy's reaction and I took it to be grief at the situation of Caylee being missing. Not for 1 second did I take it to mean incest.