John and Abigail Adams

I cannot imagine how hard it must have been for Abigail to not have her husband for the ten year span that he was out of the country even though it was for a good cause. From reading their lettters, it did not seem like they had much affection for each other but I guess how much affection can you show in a letter? It was very admirable that Abigail took on so much while John was away. She knew what he was doing was so very important to them and to the country; I wonder how hard it was for her to not have her husband there with her.