I don't think Alix had rosacea. The redness and blushing happens to certain people because of their reaction to uncomfortable situations. I know because it happens to me. It tends to happen around the face and neck area, looks like a rash, but it goes away when I calm down. In a shy self concious person like Alix, it was bound to flair up. There is an actual name of this condition, it is not life threatening, but you can get surgery for it. As for her heart issues, she had diptheria as a child, this can lead to heart failure. She might have had this later in life, exacerbated by all the stress she was under.