Hermione took one last look at her reflection before casting  abscondo finite, a spell Jansen and she had created when they were figuring out her disguise for Hogwarts.  Admittedly, they didn’t change much, but they also knew British wizards wouldn’t be looking for a famous American muggleborn amongst them.  Honestly, she didn’t think a third of the UK’s wizarding world even knew who her father was, which made her giggle to herself because she sounded a bit like twelve-year-old Malfoy.