On the other side her dying because she lost the will to life... is kind of a good explanation for an unlikely death in such an advanced civilization.
Obviously they could simply keep her alive despite any actual medical condition. So what else could she die of... except for a spiritual (I don't know a better description) reason.
Kind of a "so bad it's actually good" explanation.
I know we're dealing with human aliens, but there is actually a thing called takotsubo cardiomyopathy, also known as "broken heart syndrome", where your heart weakens as a result of emotional trauma.
It is rarely fatal, but deaths have occurred as a result of it.