I wouldn't act like anything happened; because it didn't. She's not to 'blame' for not accepting your friend request right away, it's not an insult to not accept someone as a friend instantly, especially as she's only just met you.

I don't think you can really be interested in someone for something like marriage on seeing them for the first time as you don't know them yet! Show her some respect and spend some time getting to know her and you'll find out if she's interested and if she's right for you