I see Junko's gift and i think that tagging here Chang'e_(Touhou} could be pretty valid because According to ZUN's words from official Touhou magazine, Chang'e right now is sealed in the form of a frog
It makes sense to think that the person out of the frame is Hecatia, but the hand alone doesn't necessarily indicate that that person is Hecatia. The general rule of thumb for tagging is that we tag what we can see, not what we know.