She reminds me a lot of Ruby "The hole" from Ross's thread. I guess lusting after JonTron is slightly better than lusting after the Amazing Atheist at least?
Going to have to agree with everyone else about the abuse claims not quite adding up. The big one for me was the tweet chain talking about her dad hitting her head, someone telling her to go to the police, then her responding she couldn't call the police because her head hurt too much or her vision was blurry or something, followed by requesting said person to DM her. Even ignoring the obvious bullshit of somehow being incapable of dialing whatever Scottish 911 is but being able to carry on a Twitter thread/DM conversation, the excuse wasn't something like "I can't because I'll end up homeless" or "the cops won't do anything and will just make it worse." It seemed like the implication was she needed help to deal with the situation, but obviously there was no real effort made to actually do something.
She also talks about having a job, and being responsible while saving up for plushies and other crap like that. Someone who was genuinely being abused and almost murdered like she claims wouldn't be saving up to buy toys, they'd be saving up to move out. It's one thing when you occasionally purchase something for yourself even when you're in debt or whatever because you need something to help you decompress and stay sane, but it really becomes harder to justify that sort of behavior if you're apparently living with someone who consistently tries to murder/beat you. Real abuse victims would absolutely do everything in their power to get out of that situation. They wouldn't delay it because they wanted toys. Not without having something severely wrong with them, and while she's pretty open about the 'tism, it doesn't seem like she's that deep in she'd prioritize toys over her safety. I have a feeling the "abuse" amounts to her dad telling her to get a job, get off of the computer and go outside, etc. If her dad really was as abusive as she claims and was trying to kill her, it's pretty weird he'd continue to waste money supporting her well into adulthood.
To top it off, you tend to see a lot of these abuse claims in certain (most) tumblr circles, and it's pretty clear Lagoona is the type of person to frequent these communities, so it wouldn't exactly be out of character to make up abuse claims for attention. It also seems doubly weird that she was trying to "help" Chris by spewing the same stuff her abusive parents tell her, especially when she pretty obviously looks down on Chris with the constant "at least I'm not Chris" posts. You don't say that about someone you want to help or see improve, you say that about someone you think is a trainwreck and beneath you.