We have a daughter who is 4 months old and I really love my gf and want to marry her and be with her forever but it seems as of now she has concerns and I don’t know what to do
Answers (2)
How closely aree you related? You left out the most important piece of information!
Brother and sister, first cousins, second cousins, related only by marriage, what?
In some states it is legal to marry your cousin and in some states it is not legal. You can Google that. Related by marriage means nothing, that is the same as not being related.
"Our great great grandparents were cousins."
So, you and your gf have 1 couple of great great great great grandparents in common. That's 2 out of 126 persons! This kind of relationship is called ancestral and poses no threat to your children whatsoever.
If one of your 16 great great grandparents and one of your gf's 16 great great grandparents were first cousins, then you and your gf are fifth cousins and you share, due to this distant relation, about 0.05% of the genetic material which accounts for the similarities and differences between humans. (We are not talking about the 99.9% of DNA which defines us as a species and is identical in all of us.)
Our great great grandparents were cousins..