I hadn't watched this person's video until today so can't comment on her past behaviour that I've read about here, but what I feel I can say is this.
These family vloggers have made the CHOICE to post the parts of their life that they choose to show us online. There are always going to be people who won't like or agree with you, it isn't possible for 100% of the people to like you 100% of the time, no matter who you are. It's the same thing in real life FFS, the only difference is that in real life we don't interact so personally with such a large number of people on a daily basis.
When you decide to choose a career such as this, you have to be willing to accept the bad with good, and whether those comments come from a more condensed gossip site like this one or from comments dribbling in on their channel, they are always going to be there. Yes it's unfortunate, and it's much nicer to think that everyone will love you, but that isn't real life.
Having watched her for the first time today in her trolls video, I did find it uncomfortable to watch, but at the same time if the comments on tattle life are affecting her so badly that she is at rock bottom in her life, then perhaps this isn't the best career choice for her and her family. All of us are judged on a daily basis by employers, colleagues, strangers, even friends and family, it's just a part of being human. Putting yourself on the internet is just expanding that field on a global scale.
I have a family friend who is in the public eye, and she is aware of a forum which discusses people in her sector of work. She's fully aware that she could very well be spoken about but hasn't once looked at it.
At the end of it, we all have choices and we are all responsible for our own actions.
Sorry for the long post!