I think there's a grain of truth in each of those scenarios, an incentive above the usual rate could have been offered as a lure and perhaps one paid-for visit by Paul thrown in, to keep her from going stir crazy.
I'm sure living in Prague would beat living in darkest Siberia hands down, but living anywhere without family and friends around you needs considerable resilience and a busy work schedule to keep you occupied when there is only TV and the internet to provide any semblance of human contact and using skype has to be a given.
Money must play a big part, too. It's like men living on an oil rig for months at a time, or some other remote location in intense heat or cold, where pay is massive and conditions far from pleasant, but the bank balance grows much, much faster than it otherwise would.
Leora makes the most of it, giving full rein to her self-pleasuring instincts and an ongoing enthusiasm for her exhibitionism. Trying to spice things up with as much variety as she can muster, as well.
Long may it continue. But for exactly how long, we will need to wait and see and savour every session in the meantime.