> So the takeaway is always send less words as you don't know on what device the recipient will read it.

The real takeaway is to learn to judge the character of the people you meet, and not to waste time with vapid morons who are intimidated by four paragraph messages. How are you going to have any kind of meaningful adult relationship with such a creature? Even assuming that you don't want a relationship, and merely want to navigate her arbitrary tests for long enough to score a quick sexual fling -- what's the point? You jumped through some hoops and scored a pointless hedonistic trophy. Whoop.

This is my problem with advice like yours. You change your behaviour to avoid coming across as "needy" -- but you're still making your primary goal winning the approval of an irrational person. Be more selective, know your own value, understand what kind of person you value -- then just be straightforward and direct when you do meet that kind of person.