[@Alina13][@Obscurus]

For the introvert and extrovert thing, you could put that she's an ambivert maybe. Most people are ambiverts by definition, an ambivert is someone who shares both extroverted and introverted traits, as such they can't fit into either catagory properly. This however doesn't sound very much like a trait rather more of a classification though(this may be more my opinion though). It's just a tip however ^^