About social media
I think this is absolutely NOT concerning in Yulia's case.
She doesn't post anything innapropriate, neither does she publish too much privat stuff and most importantly she isn't hunted by some crazy haters like others are. Mainly I see love and support on her social media and it looks like she uses it to bring herself up rather than being brought down.
that's not the issue! the issue is actually people telling her simple things like "we know you will win" and "we love you" etc. these basic comments lay the burden of expectation on her and keeps it on her mind that she is being watched, adored, and scrutinized. so much pressure is added to her by saying things all of us wouldn't hesitate to tell her. this video gets into it a little, but basically it isn't so much the bad stuff that is the problem but the common stuff all of us would say...
https://www.youtube.com/watch?v=No03bfrrKaQ


Which is why I think it is definitely a psychological problem, at least in part.