... I think if you love the name Morgana, and have many reasons for loving that name and what it conjures in your mind, then aspects of that name and what you like about it will shine through over the years as your child grows. Maybe not just as you imagine them now, but your little girl will become the name, and new associations will emerge as your little one's personality shifts over the years.
Absolutely. I think its fun to describe what kind of person you see in your mind when you hear a name, but the name does not make the person, and the person doesn't make the name. Your view of whatever name you choose will grow and evolve over time, and so will your child, and eventually they will meld for you and it will "make sense" - if that makes sense.