The pleasure is all ours.  Welcome !!!

@adamholiday - I must admit when I read your initial post my thoughts were with a young pair of siblings, and when you mentioned her smiling and hoping you'd do it, I had in mind the typical love-hate brother sister relationship where she'd want some sort of power-humiliation trip over you. But checking your profile age, I guess that's pretty far from the case now - you're both mature adults and presumably both with your own sexual experiences.   I guess you may both have your own families to complicate matters - but in the first instance it'd be good to have a detailed honest chat about the experience.  At a time when she's open and receptive to that discussion (since the moment may have passed).  It sounds like that may already have taken place. It'd be good to establish a four-walls trust that nothing goes outside the room - then establish what it was she enjoyed.  It'd be quite legitimate if it was an element of power/control, not exactly wanting to humiliate you but a level of seeing you desperate.  Are you the older brother, were you always the bigger, stronger one allowed to do 'boy things' and she wasn't.  And now she's seen your weakness? You could discuss her feelings on herself being desperate, does it bother her, does she avoid desperate situations or conversely has she ever wet herself?  If not, it may be the wondering how it felt for you. Or it could be reassuring that you had an accident too.  Perhaps this could lead on to some sort of agreement that you'll let her watch you pee again - but she has to put herself through it too and take her turn.   And given your membership here, maybe that's something to share with her... depending where she's coming from.

it does, i was in a low squat and the way the pee stream comes out is different than it would be if i were sitting or standing

Thank you both for the perspectives. Tricky one. 

I agree with this.  I've only been to rural France once and I was with my wife, so I couldn't go and hang around lay-bys, but I saw plenty of tissues.   My wife and I also peed in a lay-by, which is quite unusual for her.  She said she didn't care as there was no chance anyone would know her there.