The two girls are obviously not identical twins, so they are genetically as similar as ordinary sisters. Notice that they really do look alike. By heredity, they are half white. So, the recombination would be expected occasionally to give such a result, and the chances are much better than a million to one.
Both are very cute, and they look nice together. They are in a two-parent family, which is an advantage lacking for 41% of the children new-born in our own country nowadays.
There is no reason these girls shouldn’t live happy lives. God bless them!
I’m from Missouri: show me their DNA.