Is this the kiss of death of it ever happening?
No.
It can mean many things. And that is frustrating since you would rather probably have One Direct Straight Answer and simply Know.
Life and minds can be pretty dynamic, though.
Sometimes "no" really Does mean "No."
Consider, while it is your fantasy, it may be that focusing on that too much could actually be what inhibits it. When you really think about it, are you actually thinking of her... or yourself?
Because if it really was truly about her, then the "kiss of death of it ever happening" would look more like, "Well, if she wants to and enjoys it, great. But if not, that's okay, we can look at what she does enjoy."
Am I making sense? Finding this centered view is crucial toward sharing a lifestyle. To be shared - it must be Shared.
So, there are many reasons and I am sure many people will gladly comment on what they could be and try to help you figure that out. I will let them do that and be different.
Try to focus yourself more on what makes you love this person in a way that you actually care about their happiness more than your own.
That way - no matter what the future holds for you both - You will both be happy and enjoy it.
And not be stressing all the time over it.
Right?