I will still forever headcanon that the whole "mind-wiped my parents so they're safe and nowhere in England" story that Hermione told Ron and Harry was an utter lie that she told them because she knew Harry was still shit at keeping Voldemort out of his head, and any precautions she had taken would be useless if Moldy Pants knew how they worked. Because Riddle wouldn't question that someone would just mind-wipe people to get them out of the way; he doesn't understand people, not really. And neither Ron or Harry are going to question that Hermione could do that or that she'd go to those lengths to protect people she cares about. Meanwhile, her parents were probably off in Canada hoping to get word from her so they'd know it was safe to come back to England. Also, I absolutely believe that Hermione would've tried her hardest to keep up with what was going on in the muggle world so that she could still fit into her old world. And that she'd try and get things set up so that she could go to university or get a job in the muggle world if she felt like it.