TET: The 'drop down' cyclic control was not as uncommon as one might imagine and I believe some of the early production Hiller's employed this arrangement.
I am skeptical as to whether there would have been any correlation between the power lever (where Stanley's other hand was) and the tail rotor. Those prototypes (from what I understand) were pretty rudimentary assemblages and manual torque control (I am sure) would have been the order of the day.
I am sure that Stanley explained to the missus that she would be required to put in a bit of pedal!
If you appreciate helicopter designers and their obliging spouses .. then this may also be of interest:
Charles Kaman test flies the K190 prototype and achieves a hovering touchdown onto three plywood squares held in fixed position by Mrs Robbie Kaman (left) Ann Griffin (right), and another girl (behind Mrs Kaman) in 1948
Charles and Robbie Kaman in their latter years accompanied by their beloved German Shepherds (yes, they were dog lovers)
Photos courtesy of Kaman Aerospace archives.