I mean this in the absolute nicest, kindest way possible...and it's coming from someone with tattoos herself, are you sure the name is a good idea? Gosh I know how that sounds, I know you love her, not saying anything, but not only is it usually not done for the obvious reasons, when the ink fades and ages, writing doesn't age as well as images.
That being said, have something drawn up and see what you think. That's the best way.
It'd look good if it was properly,no,if it was amazingly done,but You might want to reconsider getting a person's name,I don't know your age,but I recommend getting something that reminds you of her but that you also like on it's own,so if anything shall happen you won't regret it.