I think it's absolutely pathetic how she's been treated, to be honest.
The way she's been hounded by some parts of the media (the precise reason she's not facing them anyway) is ridiculous.
If someone is claiming their mental health is suffering, you don't punish them or slap them with a fine ffs. You help and support them. The fact that all 4 Grand Slam organisations have said she faces the fine for not obliging with her duties is fucking stupid, too. What about their duties to protect their players? They've actually quoted 'fairness' in their reason to fine her, too, which is laughable.
I fully back her for her decision. If she couldn't commit to the interviews/press conferences due to physical injury then that would be fine. Protecting her own mental health is still a valid reason for not doing it as well.