I have to be honest the show hasn't really portrayed her that bad, she has some bitchy moments, some critics from her competitors, that's it.
People on the internet are nasty though, is pretty awful, the first rule of the internet is to not read the comments.
The issue here is that she's handling her social media in the worst possible way, that tweet comes off as a cry for attention (is it actually real? Edit: omg it is), you pretend to shower so that people don't know you are crying and then go around tweeting about it? 5Gs.
She needs to log off the internet and let her head clean up.