If it's local, why don't you just go check it out? And you could ask for pics of the pairing. Are you comfortable with determining if a snake is gravid or not...I mean, it becomes fairly obvious at a point, but not so obvious at first if you're not aware of when it ovulated, shed, etc...

I'd say it's entirely possible that the lesser is gravid(not saying it is)...looks like a very pronounced ridged back for a snake that otherwise looks like a perfectly healthy weight.