Polls: Dating

I seek a decently attractive woman that has never been in love or had a romantic bond with a guy before. Then I start to question, if she has always wanted to fall in love, why would she have never been in love at this point in her life? Surely, if she is at least decently attractive, she would have had guys interested in her before at some point in her life. The only reasons I can think of is that she is shy, very introverted and sheltered, or just was never asked out. Those reasons are perfectly fine (and desirable), but what are really the chances?

Hello!

I had my first date with a girl yesterday.

Everything went smooth and actually pretty good, in my opinion.

• Chat went smooth, no awkward silence.
• Laughed a lot together.
• Saw her stare (in the periphery) at me when she showed me something on her phone.
• She had open body language: No arms across or wandering eyes on the surroundings.
• She let me pay the bill.
• Bumped shoulders a lot during walk.
• Physical contact (during laugh or showing/pointing at something etc): Stroke her back/arm/hand on knee, and no signs of withdrawal, so I assume she was comfortable with me.
• Didn't kiss, because I don't want to do that first date, but we did a farewell (long) hug.
  *We said we had a good time, before we part.

So withing one hour I also sent her a follow-up message, yet again that I had a great time with her and I'm open to have a second date.

Now she have been online on FB-Messenger 2-3 times since the date.
She haven't "read it" it though, but I'm sure you can read it in the notificationbar and then swipe it away.

My question.

• Why would you not respond to a successful date?
• How long should I wait before sending a text again, and what should I say without come out as needy?