But you looked for her. [ that's the important part, in ochako's opinion. ] If the three of you couldn't find her, then she must have wanted to be alone, in the end.

I know that doesn't make it better, but I don't think you should blame yourself for something that was her own choice. If you all knew what was coming... [ and obviously, hikaru did, too. ] ...didn't she deserve to be able to make that choice for herself, when the rest were taken out of her hands?