So, quite unexpectedly, a retired provider I had enjoyed good rapport with texted me out of the blue last week.  We chatted and made a date to meet the next afternoon.  All was as it used to be -- no, even better -- intense and unrestrained.  We enjoyed almost three hours in each other's company.  As we left the room, she walked ahead in one direction, and I stopped and said goodbye as I walked in the other.  While we were together, we talked quite a bit (in between other activities), but no mention was ever made of pay.  Only afterward did I realize we "did it" outside of a business transaction.  Should I ignore it and just savor the luck while it lasts?  Or should I give her the usual gift, in the hopes of prolonging these meetings?

Any thoughts or past experiences in this vein?  Any thoughts from other providers?