I think its one of them caught between a rock and a hard place kind of things.
I think she needs this push to get off of YouTube, and get a normal job. It's disgusting that she can do all of this and still rack up enough of a following (and money) for a massive house with dogs, a walk in wardrobe, office space and all the shite she hauls. If she did this in her work place, and spread vile things about her coworkers, then surely she'd be brought to the management for a chat?
But I also don't like her grandparents being caught up in it, I think her mum has the right to know considering she is involved indirectly with it being her son getting the blame, and in case it goes further. I think Demi needs to come out with it now before it spreads, a good honest apology now might be the difference between her losing her platform and keeping it.