For me... Apart from a good ending, she also lacks meaningful quests. I generally dislike offscreen stuff because they're usually the easy way out instead of actually showing it, I want to be able to see it for myself. How did she come up with the cure etc. I want to be the one to help her seek out the cure. Much like how I actively helped the other companions.
If her questline remains this empty but we get such a offscreen moment of 'hey guys I found a way to cure my heart'... eh, doesn't sit well with me.
We already got a 'bandaid' and if another 'bandaid' comes to light it just won't help with the fact her questline is barebones.
