This sounds like a tough one. I’m no good with the emotional part of things but.. Stating (positive) facts always keeps the person down to earth and more likely to consider what you’re saying to comfort them. Distracting her from her problem might work too depending on her situation but you’ll have to ask if she wants a distraction. This is only a fragment of the way to console someone, Idk how to do the emotional part of it. And I dunno the details of what she’s going through though so yeah.