there are some girls who don’t. some girls do think that if the guy likes them enough he should just propose. there’s no reason for them to be “friends” before the proposal.
however, i think Sinuhe can still give it a try and try to talk to her. i read after posting that she has male friends. so maybe she is not that conservative/strict about talking to guys just for the sake of being friends.
there are girls who are well educated, work etc, but when it comes to friendship with guys, are very conservative.