I think it's interesting you used the term "Daddy Issues" in your post. Steve--of course (I guess)--never used that term in relation to his relationship/non-relationship with his father (at least not yet). But, in 1 of the Deleted Scenes from Nalowale (the ep which has the scene of Steve & Catherine waking up together at the McGarrett house shortly after the start of the ep), Mary says to Catherine, after explaining her own relationship/non-relationship with Papa McGarrett, almost immediately after meeting Catherine for the 1st time, "I guess that explains my 'Daddy Issues'." So at least Mary recognizes she has them, even if her recognition of them was edited out of the ep involved.