I'd apologize for this, but being annoying is great and I love it.
Ashley tries very hard to maintain her normally bubbly demeanor post-4. She works tirelessly to return to "normal," even after dropping out of school, but trials and tribulations lead her to having to accept this "new" normal and go about it accordingly.
She's very much "head on a swivel," she's always looking over her shoulder, walking just a little faster if she hears a car behind her. Hates the sound of footsteps behind hers. If she's with someone she really trusts, really feels safe with, she isn't as cautious... but she can hardly stays still. Her nails are always short as a result, her fidgety habits worsening post-4, but nail biting is arguably her best mechanism for coping.
She has a complicated relationship with how she's perceived after her kidnapping. She doesn't like the sympathetic stares or her newly gained title of a display of American resilience, she doesn't like thinking of herself as a survivor. She wants so, so badly to go back to being just Ashley, but she can't do that, now. In her future president verse, this is thrown around a lot during her campaign, advised by her PR, and she hates it just as much then.
On the grayer side of things, one of the first things she does after arriving home is ensuring Luis' public records are expunged, wanting to afford him privacy and giving him, what she believed ultimately, the forgiveness he had earned, highlighting his feats of heroism as opposed to his experimentation with the Plagas. It's non-negotiable for Ashley, especially as she still doesn't know if he was given a proper send-off / burial. It's the least she can do for him, she feels. She doesn't read through his files and doesn't have to know the details.
