Sera has many ADHD traits (hyperactivity, impulsivity, distractability), she is the ultimate pragmatist, don't think, don't talk it over, do it!
She is also pretty negative about being an elf... I'm playing a dalish warden and every time I mentioned elves she disapproves, and it is clear she fancies Celene way over Briala, however, she has head screwed on right when it comes to class, power and economic inequalities (Red Jenny, that's a socialist organisation, right?), but without Blackwall's resentfulness. Her approach to religion is also pretty practical and utterly confounds Iron Bull.