It was confirmation. Confirmation that she had made the mistake. Confirmation of her thoughts when she was younger. Confirmation that she did indeed ruin people. Mostly it showed her what happens when you choose the wrong path.
She had wanted to save him. To ensure he would always be okay. And not in the delusional “he’s a bad boy maybe he’ll change for me” way. Bella had always been good at reading people and seeing who they were and knowing what they needed. She wasn’t psychic. This wasn’t television. She just had really good instincts and insight. Probably from spending her adolescents smoking weed and watching people.
When she made the mistake her gut had told her. But she ignored it. He needed her more than she needed people.
It’s just that Bella didn’t fully realize what she had sacrificed in helping him. She did not realize the price she would pay for this deed and all she would lose in the process. It wasn’t fair. But life rarely is. Maybe this time she would learn. She didn’t think so though. All this has done was prove to her what she’d already known in the back of her mind for years.
She was forever to be alone.
And with it she unwove another string in the disentanglement of Bella and Linus. Only one remained and what she did with it we shall see