It's a bit unusual, but you were lucky (or smart) enough to choose a provider with good GFE skills and, apparently, an independent who didn't have appointments stacked one after the other.  Better than that, apparently the provider thought you were interesting enough to spend extra time with.  It's always nice to make that kind of connection - a bonus that doesn't always occur.

Consider seeing her again since this will be the best way to let her know that you appreciated the connection and time she spent with you.

But don't expect this kind of thing from all providers.  Even the best ones can be clock watchers sometimes.  And it may not be the same experience with her the second time either.  

Welcome to the Hobby,

-PV

If she's enjoying your company and has free time, it's common, at least for me.  Many ladies have lots going on in their lives and will give you signs to leave when your time is up.  So long as it's not a foot up your ass, that's OK too.  I've been lucky lately...most of my appointments recently have gone over by at least an hour.  It's not me trying for free time, but a mutual thing.

Your Mileage May vary.

 You were a gentleman, she was not pressed for time and enjoyed your company. Simply stated you "clicked"

There will probably be more scenarios like this and conversely ones that will for no lack of performance on either’s part mutually close prior to the bell. Even though it's been coarsely referred to as "The F**k without the date" personalities do factor.