Well here's something weird... my female did what the male is doing in your first pic.
In this pic she is the normal female wrapped around the top of the male...
...but in this lock, Luke's tail is wrapped around hers in a similar way to your second pic.
I have definite confirmation that Luke is a male, and they stayed like that (with their tails up and all!) for at least several hours when I was checking on them. So yeah, maybe she's just weird? Who knows![]()